It is probably not the case that Mary got the football. It is improbable that Jessica is a sheep. We doubt that Bernhard is a rhino. We believe that if 'Bernhard is a rhino and Jessica is a sheep' then Greg is a swan. Chances are about even that if either 'Jessica is a sheep' or 'Bernhard is a rhino' but not both then Sumit is hungry. There is almost no chance that if 'Jessica is a sheep' or 'Bernhard is a rhino' or both then Lily is a lion.
There is almost no chance that 'Jessica is a sheep and Mary got the football'.
There is almost no chance that 'Jessica is a sheep and Mary got the football'.
There is a better than even chance that 'Jessica is a sheep and Mary got the football'.

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

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

  query(conclusion).
  
'Jessica is a sheep and Mary got the football'.