It is highly unlikely that Greg is a rhino. There is a better than even chance that Winona is a mouse. It is highly likely that Julius is a frog. It is probably not the case that if either 'Winona is a mouse' or 'Julius is a frog' but not both then Jessica is a cat. It is likely that if 'Julius is a frog and Winona is a mouse' then Sumit is bored. It is likely that if either 'Julius is a frog' or 'Greg is a rhino' but not both then John went to the garden.
It is probably the case that 'Greg is a rhino and Jessica is a cat'.
It is impossible that 'Greg is a rhino and Jessica is a cat'.
It is probably the case that 'Greg is a rhino and Jessica is a cat'.

  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
  0.05::factA.
  0.6::factB.
  0.9::factC.
  %hop1
  0.25::factX:-xor(factB,factC).
  0.7::factY:-and(factC,factB).
  0.7::factZ:-xor(factC,factA).

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

  query(conclusion).
  
'Greg is a rhino and Jessica is a cat'.