context: We doubt that John went to the hallway. It is likely that Bernhard is a rhino. There is a better than even chance that Mary dropped the apple. It is highly likely that if Mary dropped the apple, and Bernhard is a rhino, then Greg is a swan. It is certain that if Bernhard is a rhino, and Mary dropped the apple, then Sandra left the apple. It is highly likely that if Bernhard is a rhino, or John went to the hallway, then Julius is a frog.
hypothesis: It is unlikely that julius is a frog, or John went to the hallway.
valid_hypothesis: It is probable that julius is a frog, or John went to the hallway.
invalid_hypothesis: It is unlikely that julius is a frog, or John went to the hallway.
hypothesis_assertion: Julius is a frog, or John went to the hallway.