context: Chances are slight that Greg is a lion. It is highly unlikely that Julius is yellow. It is probable that Emily is a sheep.
hypothesis: It is impossible that emily is a sheep, or Julius is yellow.
valid_hypothesis: It is probable that emily is a sheep, or Julius is yellow.
invalid_hypothesis: It is impossible that emily is a sheep, or Julius is yellow.
hypothesis_assertion: Emily is a sheep, or Julius is yellow.