Chances are about even that Antoine is bored. It is probably not the case that Jeff moved to the garden. It is likely that Brian is a frog. We believe that if 'Jeff moved to the garden' or 'Antoine is bored' or both then Greg is a swan. It is almost certain that if 'Antoine is bored and Jeff moved to the garden' then Mary got the football. It is certain that if 'Brian is a frog and Jeff moved to the garden' then Lily is white.
It is unlikely that 'Jeff moved to the garden and Greg is a swan'.
It is unlikely that 'Jeff moved to the garden and Greg is a swan'.
We believe that 'Jeff moved to the garden and Greg is a swan'.

  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
  0.5::factA.
  0.25::factB.
  0.7::factC.
  %hop1
  0.75::factX:-or(factB,factA).
  0.95::factY:-and(factA,factB).
  1.0::factZ:-and(factC,factB).

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

  query(conclusion).
  
'Jeff moved to the garden and Greg is a swan'.