context: It is improbable that Greg is a frog. We doubt that Brian is a lion. It is probably not the case that Julius is gray. It is highly unlikely that if Julius is gray, or Greg is a frog, then Daniel dropped the milk. It is unlikely that if either Brian is a lion, or Julius is gray, then Bernhard is green. Chances are slight that if either Greg is a frog, or Brian is a lion, then Mary moved to the garden.
hypothesis: It is likely that greg is a frog, and Mary moved to the garden.
valid_hypothesis: It is impossible that greg is a frog, and Mary moved to the garden.
invalid_hypothesis: It is likely that greg is a frog, and Mary moved to the garden.
hypothesis_assertion: Greg is a frog, and Mary moved to the garden.