It is impossible that Julius is a swan. It is likely that Lily is a rhino. It is almost certain that Brian is yellow. There is a better than even chance that if 'Julius is a swan and Lily is a rhino' then Emily is a mouse. Chances are slight that if either 'Julius is a swan' or 'Lily is a rhino' but not both then John went to the garden. It is impossible that if either 'Julius is a swan' or 'Lily is a rhino' but not both then Jason is tired.
It is impossible that 'Brian is yellow and Julius is a swan'.
It is impossible that 'Brian is yellow and Julius is a swan'.
It is probably the case that 'Brian is yellow and Julius 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
  0.0::factA.
  0.7::factB.
  0.95::factC.
  %hop1
  0.6::factX:-and(factA,factB).
  0.1::factY:-xor(factA,factB).
  0.0::factZ:-xor(factA,factB).

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

  query(conclusion).
  
'Brian is yellow and Julius is a swan'.