context: We doubt that Mary got the milk. It is improbable that Brian is a rhino. It is probably not the case that John moved to the office. There is little chance that if Brian is a rhino, or Mary got the milk, then Sandra left the football. There is a better than even chance that if either Mary got the milk, or John moved to the office, then Greg is a lion. It is highly unlikely that if either Mary got the milk, or Brian is a rhino, then Julius is white.
hypothesis: We believe that either Sandra left the football, or Greg is a lion.
valid_hypothesis: We doubt that either Sandra left the football, or Greg is a lion.
invalid_hypothesis: We believe that either Sandra left the football, or Greg is a lion.
hypothesis_assertion: Either Sandra left the football, or Greg is a lion.