context: It is probable that John moved to the garden. We doubt that Julius is a frog. It is probably not the case that Mary discarded the milk.
hypothesis: It is likely that julius is a frog, and John moved to the garden.
valid_hypothesis: Chances are slight that julius is a frog, and John moved to the garden.
invalid_hypothesis: It is likely that julius is a frog, and John moved to the garden.
hypothesis_assertion: Julius is a frog, and John moved to the garden.