context: There is a very good chance that Julius is a lion. We believe that Mary moved to the garden. It is unlikely that Sandra got the apple.
hypothesis: It is improbable that mary moved to the garden, and Julius is a lion.
valid_hypothesis: There is a better than even chance that mary moved to the garden, and Julius is a lion.
invalid_hypothesis: It is improbable that mary moved to the garden, and Julius is a lion.
hypothesis_assertion: Mary moved to the garden, and Julius is a lion.