There is almost no chance that Emily is a mouse. It is probably not the case that Mary left the football. It is probably the case that John put down the apple. There is a better than even chance that if 'Mary left the football' or 'Emily is a mouse' or both then Julius is a swan. It is probable that if either 'Mary left the football' or 'John put down the apple' but not both then Greg is a lion. It is improbable that if either 'Mary left the football' or 'John put down the apple' but not both then Lily is a rhino.
It is probably not the case that 'John put down the apple and Greg is a lion'.
It is probably not the case that 'John put down the apple and Greg is a lion'.
It is almost certain that 'John put down the apple and Greg is a lion'.

  and(A,B) :- A,B.
  or(A,B) :- A;B.
  nand(A,B) :- not(and(A,B)).
  nor(A,B) :- not(or(A,B)).
  xor(A,B) :- or(A,B), nand(A,B).

  %hop0
  0.02::factA.
  0.25::factB.
  0.7::factC.
  %hop1
  0.6::factX:-or(factB,factA).
  0.7::factY:-xor(factB,factC).
  0.1::factZ:-xor(factB,factC).

  %hop2
  conclusion:-and(factC,factY).

  query(conclusion).
  
'John put down the apple and Greg is a lion'.