Sentence 1: Clark was notorious for being easy to anger. 
 Sentence 3: When the discovery was made, Clark banged on her door 
 Sentence 4:  Wendy answered, apologizing to the grumpy old man 
 Sentence 5:  She quickly had the children go over and collect their belongings 
 Given Sentence 2: Wendy's children left their toys on his yard overnight.