Chef is giving a big party to all his friends and their relatives. Relatives of very far-away (by relation) will be present. Little Joe (uninvited) is curious to know how distant two people are, say X and Y.
There are 6 fundamental relations: father relation, mother relation, son relation, daughter relation, brother relation and sister relation. Using these fundamental relations we can describe all other relations between relatives. For example, one can say that Chef Prime is son of daughter of sister of father of father of Chef Composite.
You are given R relations of form "A is F of B", for N people from the party. There variable F is one of the following strings: father, mother, son, daughter, brother, sister. Also you are given Q queries of Little Joe, each query has form "X Y". For each query output the distance between persons X and Y. Distance is equal to the minimal number of fundamental relations appearing while describing the relation between X and Y. For example distance between Chef Prime and Chef Composite is 5. 
Important points:
1. Here brother (or sister) relation is considered between children of same parents only. Hence cousins are not considered brother (or sister) .
2. Given relations meet all the following conditions:

Each person has an unique name, and each name appears in at least one relation (as A, or as B).
No name appears more than once as the first part of relation (as A).
There is no cyclic relations. For example, the following relations cannot appear simultaneously in some testcase "A is F1 of B", "B is F2 of C" and "C is F3 of A".

3. One can have at most one father and at most one mother. And in Chef's land no one takes divorce!
4. Since you should calculate the minimal fundamental relations between some persons, you need to make some conclusion. For example, if X is father of Y, and Y is brother of Z, then X is father of Z.

Input
The first line contains two integers N, number of people, and R, number of relations. Then R lines follow. Each line contains a relation of form "A is F of B".
The next line contains integer Q, number of queries. Each of the next Q lines contains two space-separated strings X and Y, denoting the query of the Little Joe. X and Y are guaranteed to be valid names mentioned above in relations.

Output
Output Q lines each containing distance for i^th query. Print '-1' (without quotes) if X and Y are not related in any manner.

Constraints

2 ≤ N ≤ 256
1 ≤ R < N
1 ≤ Q ≤ 16384
1 ≤ Length of string A, B, X, Y ≤ 4
A ≠ B
X ≠ Y
Input relations are correct in terms of gender.
Each name consists of lower case alphabets ("a-z") only.


Example
Input:
8 7
tom is brother of ron
ron is brother of john
john is father of kel
kel is son of cloe
cloe is sister of ru
anne is daughter of cloe
ru is mother of fred
5
kel john
ron kel
john ru
john kel
john anne

Output:
1
2
3
1
1
 

Explanation
Consider the first query: kel is son of john, so the distance = 1
Consider the second query: ron is brother of father of kel, so the distance = 2
Consider the third query: john is father of son of sister of ru, so the distance = 3. Note that relation between john and ru can also be expressed as john is father of daughter of sister of ru
uniqueueId = 0
class Dictionary(object):
	#generic dectionary object
	def __init__(self, type):
		self.descriptor = type
		self.hashTable = {}

	def setKeyValPair(self, key, value):
		self.hashTable[key] = value

	def getValue(self, key):
		if key in self.hashTable:
			return self.hashTable[key]
		return None

#helper funcs
def getObject(name):
	global dictionary
	obj = dictionary.getValue(name)
	if obj == None:
		obj = Person(name)
		dummyAncestor = Person(None)
		dummyAncestor.initChildrenList(obj)
		obj.initParentList(dummyAncestor)
	return obj

def setFirstObjectParentofSecondObject(parentObj, child):
	#is it possible that parentObj is already a parent of child? No since there are no cyclic relations
	for parentOtherHalf in child.getParentList():
		break
	newParents = set([parentObj])

	#update the children set
	parentObj.appendChildren(parentOtherHalf.getChildrenList())
	if type(parentOtherHalf.getName()) != type(1):
		parentObj.setOtherHalf(parentOtherHalf)
		parentOtherHalf.setOtherHalf(parentObj)
		parentOtherHalf.initChildrenList(parentObj.getChildrenList())
		newParents.add(parentOtherHalf)
	elif parentObj.getOtherHalf() != None:
		existingOtherHalf = parentObj.getOtherHalf()
		newParents.add(existingOtherHalf)
		existingOtherHalf.initChildrenList(parentObj.getChildrenList())
		
	#update the parent set in the children
	for child in parentObj.getChildrenList():
		child.initParentList(newParents)

def setTheObjectBros(bro1, bro2):
	bBro1Parent = not bro1.isMyCurrentParentDummy()
	bBro2Parent = not bro2.isMyCurrentParentDummy()
	parent1 = bro1.getParentList()
	parent2 = bro2.getParentList()
	for parentBro1 in parent1:
		break
	for parentBro2 in parent2:
		break
	broBand1 = parentBro1.getChildrenList()
	broBand2 = parentBro2.getChildrenList()

	if bBro1Parent and bBro2Parent:
		newParents = parent1.union(parent2)
		newBroBand = broBand1.union(broBand2)
		for bro in newBroBand:
			bro.initParentList(newParents)
		parentBro1.initChildrenList(newBroBand)
		parentBro2.initChildrenList(newBroBand)
		#update other half fields too!
		if parentBro1.__hash__() != parentBro2.__hash__():
			parentBro1.setOtherHalf(parentBro2)
			parentBro2.setOtherHalf(parentBro1)
	elif bBro1Parent or bBro2Parent:
		#make sure that bro1 is the one with valid parent parent1
		if not bBro1Parent:
			bro1, bro2 = bro2, bro1
			parent1, parent2 = parent2, parent1
			broBand1, broBand2 = broBand2, broBand1
		iterParent1 = iter(parent1)
		half1 = next(iterParent1)
		half1.appendChildren(broBand2)
		if len(parent1) == 2:
			half2 = next(iterParent1)
			half2.initChildrenList(half1.getChildrenList())
		for bro in broBand2:
			bro.initParentList(parent1)
	else:
		#make sure that bro1 is the one with higher no. of bros
		if len(broBand1) < len(broBand2):
			bro1, bro2 = bro2, bro1
			parent1, parent2 = parent2, parent1
			broBand1, broBand2 = broBand2, broBand1
		for parent in parent1:
			break
		parent.appendChildren(broBand2)
		for bro in broBand2:
			bro.initParentList(parent1)

def bfs(bfsPerson):
	global distance, visited, currentVisitedCount
	bfsPersonId = bfsPerson.__hash__()
	queue = [[bfsPerson, 0]]
	while len(queue) != 0:
		thisPersonEntry = queue.pop(0)
		thisPerson = thisPersonEntry[0]
		thisPersonId = thisPerson.__hash__()
		#mark it as visited and update its distance
		if visited[thisPersonId] != currentVisitedCount:
			visited[thisPersonId] = currentVisitedCount
		else:
			continue
		thisPersonDist = thisPersonEntry[1]
		distance[bfsPersonId][thisPersonId] = thisPersonDist
		#append thisPersonEntry's parents, siblings, and offsprings to the list, if they are not already visited,  with updated distance
		#parents
		for parent in thisPerson.getParentList():
			if type(parent.getName()) != type(1) and visited[parent.__hash__()] != currentVisitedCount:
				queue.append([parent, thisPersonDist + 1])
		#siblings
		#The outer for loop is executed only once. It serves the purpose of initialization of parent
		for parent in thisPerson.getParentList():
			for sibling in parent.getChildrenList():
				if visited[sibling.__hash__()] != currentVisitedCount:
					queue.append([sibling, thisPersonDist + 1])
			break;
		#children
		for child in thisPerson.getChildrenList():
			if visited[child.__hash__()] != currentVisitedCount:
				queue.append([child, thisPersonDist + 1])
		

def getDistance(person1, person2):
	global distance, currentVisitedCount
	if distance[person1.__hash__()][person1.__hash__()] == 0:
		return distance[person1.__hash__()][person2.__hash__()]
	elif distance[person2.__hash__()][person2.__hash__()] == 0:
		return distance[person2.__hash__()][person1.__hash__()]
	else:#polulate the distance array for person1
		bfs(person1)
		currentVisitedCount += 1
		return distance[person1.__hash__()][person2.__hash__()]

class Person(object):
	def __init__(self, name):
		#if name is None, its a dummy object.
		global dictionary, uniqueueId
		if name == None:
			self.name = uniqueueId
		else:
			self.name = name
		self.uid = uniqueueId
		uniqueueId += 1
		self.otherHalf = None
		#use dictionary instead of list
		self.parents = set()
		self.children = set()
		dictionary.setKeyValPair(self.name, self)

	def __hash__(self):
		# The only required property is that objects which compare equal have the same hash value
		return self.uid
	
	def __str__(self):
		return str(self.name)

	def getName(self):
		return self.name

	def getOtherHalf(self):
		return self.otherHalf

	def getParentList(self):
		return self.parents

	def getChildrenList(self):
		return self.children

	def appendChildren(self, children):
		if isinstance(children , set):
			self.children = self.children.union(children)
		else:
			self.children.add(children)

	def initChildrenList(self, children):
		#used for setting same set of children for both parents, so that changes are propogated to them
		if isinstance(children , set):
			self.children = children
		#used while normal initialization of child od dummy parent
		else:
			self.children = set([children])

	def appendParent(self, parent):
		if isinstance(parent, set):
			self.parents = self.parents.union(parent)
		else:
			self.parents.add(parent)

	def initParentList(self, parents):
		#used for setting same set of parent for all the children, so that changes are propogated to all
		if isinstance(parents, set):
			self.parents = parents
		#used while normal initialization of dummy parent for a child
		else:
			self.parents = set([parents])

	def setOtherHalf(self, otherHalf):
		self.otherHalf = otherHalf

	def isMyCurrentParentDummy(self):
		return len(self.parents) == 1 and type(next(iter(self.parents)).getName()) == type(1)


#main prog
#create a dictionary to lookup Person object from its name
dictionary = Dictionary("nameLookupTable")
NRStr = raw_input().split()
N = int(NRStr[0])
R = int(NRStr[1])
for i in range(R):
	relation = raw_input().split()
	if relation[2] == "father" or relation[2] == "mother":
		parentObj = getObject(relation[0])
		child = getObject(relation[4])
		setFirstObjectParentofSecondObject(parentObj, child)
	elif relation[2] == "son" or relation[2] == "daughter":
		parentObj = getObject(relation[4])
		child = getObject(relation[0])
		setFirstObjectParentofSecondObject(parentObj, child)
	else:
		c1 = getObject(relation[0])
		c2 = getObject(relation[4])
		setTheObjectBros(c1, c2)
	
#for name in dictionary.hashTable:
#	personObj = dictionary.hashTable[name] #This is hacky
#	if type(personObj.getName()) != type(1):
#		print
#		print "person name: ", personObj
#		print "Other half: ", personObj.getOtherHalf()
#		print "Its offsprings: \n\t", 
#		for child in personObj.getChildrenList():
#			print child,
#		print
#		print "Its parent list: \n\t", 
#		for parent in personObj.getParentList():
#			print parent,
#		print
#distance is 2d list which is indexed by person's uniqueue id. uniqueue id can never go beyond 2*N
distance = [[ -1 for i in range(2*N + 1)] for j in range(2*N + 1)]
currentVisitedCount = 1
visited = [0] * 2*N
Q = int(raw_input())
for i in range(Q):
	strXY = raw_input().split()
	X = getObject(strXY[0])
	Y = getObject(strXY[1])
	print getDistance(X, Y)