There is little chance that Emily is a mouse. It is probably not the case that Greg is a rhino. Chances are about even that Jason is tired. It is unlikely that if 'Emily is a mouse' or 'Greg is a rhino' or both then Bernhard is yellow. We doubt that if either 'Jason is tired' or 'Emily is a mouse' but not both then Mary left the apple. It is probably the case that if either 'Greg is a rhino' or 'Emily is a mouse' but not both then Antoine is hungry.
There is a very good chance that 'Greg is a rhino' or 'Emily is a mouse' or both.
It is probably not the case that 'Greg is a rhino' or 'Emily is a mouse' or both.
There is a very good chance that 'Greg is a rhino' or 'Emily is a mouse' or both.

  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
  0.1::factA.
  0.25::factB.
  0.5::factC.
  %hop1
  0.2::factX:-or(factA,factB).
  0.2::factY:-xor(factC,factA).
  0.7::factZ:-xor(factB,factA).

  %hop2
  conclusion:-or(factB,factA).

  query(conclusion).
  
'Greg is a rhino' or 'Emily is a mouse' or both.