It is unlikely that Emily is a wolf. We believe that Mary put down the apple. It is probable that Brian is white. There is a very good chance that if 'Emily is a wolf and Brian is white' then Lily is green. It is impossible that if either 'Emily is a wolf' or 'Mary put down the apple' but not both then John took the football. We doubt that if either 'Emily is a wolf' or 'Brian is white' but not both then Julius is a frog.
It is impossible that 'John took the football and Emily is a wolf'.
It is impossible that 'John took the football and Emily is a wolf'.
It is highly likely that 'John took the football and Emily is a wolf'.

  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
  0.2::factA.
  0.75::factB.
  0.7::factC.
  %hop1
  0.8::factX:-and(factA,factC).
  0.0::factY:-xor(factA,factB).
  0.2::factZ:-xor(factA,factC).

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

  query(conclusion).
  
'John took the football and Emily is a wolf'.