context: Chances are about even that Lily is a frog. There is little chance that Mary went to the bedroom. It is probably the case that John got the apple. There is a very good chance that if John got the apple, and Mary went to the bedroom, then Gertrude is a cat. It is highly unlikely that if either Mary went to the bedroom, or John got the apple, then Greg is a rhino. It is likely that if John got the apple, or Lily is a frog, then Julius is a lion.
hypothesis: Chances are slight that julius is a lion, or John got the apple.
valid_hypothesis: There is a very good chance that julius is a lion, or John got the apple.
invalid_hypothesis: Chances are slight that julius is a lion, or John got the apple.
hypothesis_assertion: Julius is a lion, or John got the apple.