context: It is unlikely that Julius is white. Chances are slight that Sandra left the milk. Chances are about even that Brian is yellow. It is probably not the case that if Sandra left the milk, or Brian is yellow, then Mary moved to the garden. It is probably not the case that if Sandra left the milk, and Julius is white, then Emily is a cat. It is probably the case that if Sandra left the milk, and Brian is yellow, then Lily is a frog.
hypothesis: It is likely that lily is a frog, and Brian is yellow.
valid_hypothesis: It is highly unlikely that lily is a frog, and Brian is yellow.
invalid_hypothesis: It is likely that lily is a frog, and Brian is yellow.
hypothesis_assertion: Lily is a frog, and Brian is yellow.