context: It is highly likely that John left the apple. There is a better than even chance that Lily is white. It is likely that Brian is a lion. There is a better than even chance that if either Brian is a lion, or John left the apple, then Mary went to the kitchen. It is likely that if Lily is white, or Brian is a lion, then Julius is a rhino. It is probably the case that if John left the apple, and Lily is white, then Gertrude is a mouse.
hypothesis: There is a very good chance that gertrude is a mouse, or Brian is a lion.
valid_hypothesis: There is a very good chance that gertrude is a mouse, or Brian is a lion.
invalid_hypothesis: It is probably not the case that gertrude is a mouse, or Brian is a lion.
hypothesis_assertion: Gertrude is a mouse, or Brian is a lion.