context: Chances are slight that Mary went to the hallway. Chances are about even that Julius is a rhino. We believe that Jessica is a sheep. It is almost certain that if Julius is a rhino, or Jessica is a sheep, then Lily is a swan. It is improbable that if either Mary went to the hallway, or Julius is a rhino, then Greg is a lion. There is little chance that if Julius is a rhino, and Mary went to the hallway, then Bernhard is yellow.
hypothesis: We believe that either Jessica is a sheep, or Greg is a lion.
valid_hypothesis: We believe that either Jessica is a sheep, or Greg is a lion.
invalid_hypothesis: Chances are slight that either Jessica is a sheep, or Greg is a lion.
hypothesis_assertion: Either Jessica is a sheep, or Greg is a lion.