It is almost certain that Emily is a mouse. It is unlikely that Sandra left the milk. We doubt that Lily is a swan. It is impossible that if 'Sandra left the milk' or 'Lily is a swan' or both then Brian is white. There is little chance that if either 'Lily is a swan' or 'Emily is a mouse' but not both then Bernhard is a rhino. It is certain that if either 'Lily is a swan' or 'Sandra left the milk' but not both then Daniel got the milk.
Chances are about even that 'Bernhard is a rhino and Sandra left the milk'.
There is almost no chance that 'Bernhard is a rhino and Sandra left the milk'.
Chances are about even that 'Bernhard is a rhino and Sandra left the milk'.

  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
  0.95::factA.
  0.2::factB.
  0.2::factC.
  %hop1
  0.0::factX:-or(factB,factC).
  0.1::factY:-xor(factC,factA).
  1.0::factZ:-xor(factC,factB).

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

  query(conclusion).
  
'Bernhard is a rhino and Sandra left the milk'.