context: It is probable that Jessica is a cat. It is probably not the case that Mary went to the kitchen. It is probably the case that Bernhard is green. We doubt that if Mary went to the kitchen, or Jessica is a cat, then Daniel got the football. It is unlikely that if Jessica is a cat, and Bernhard is green, then Greg is a swan. There is almost no chance that if Bernhard is green, or Jessica is a cat, then John picked up the apple.
hypothesis: It is probably not the case that either Greg is a swan, or Mary went to the kitchen.
valid_hypothesis: It is probably not the case that either Greg is a swan, or Mary went to the kitchen.
invalid_hypothesis: It is likely that either Greg is a swan, or Mary went to the kitchen.
hypothesis_assertion: Either Greg is a swan, or Mary went to the kitchen.