context: Chances are about even that Gertrude is a wolf. It is highly likely that John discarded the apple. It is probable that Mary went to the kitchen. Chances are slight that if Mary went to the kitchen, or John discarded the apple, then Brian is a lion. It is almost certain that if John discarded the apple, and Gertrude is a wolf, then Daniel took the football. It is likely that if Gertrude is a wolf, or Mary went to the kitchen, then Julius is a frog.
hypothesis: Chances are about even that mary went to the kitchen, and Julius is a frog.
valid_hypothesis: Chances are about even that mary went to the kitchen, and Julius is a frog.
invalid_hypothesis: It is almost certain that mary went to the kitchen, and Julius is a frog.
hypothesis_assertion: Mary went to the kitchen, and Julius is a frog.