context: Chances are about even that Brian is a swan. It is probably the case that John picked up the milk. It is probable that Julius is a lion. It is probable that if Julius is a lion, or Brian is a swan, then Bill went to the bedroom. It is unlikely that if either Brian is a swan, or John picked up the milk, then Greg is a frog. It is impossible that if either John picked up the milk, or Julius is a lion, then Lily is yellow.
hypothesis: There is a better than even chance that greg is a frog, or Bill went to the bedroom.
valid_hypothesis: There is a better than even chance that greg is a frog, or Bill went to the bedroom.
invalid_hypothesis: It is impossible that greg is a frog, or Bill went to the bedroom.
hypothesis_assertion: Greg is a frog, or Bill went to the bedroom.