context: It is unlikely that Mary took the apple. It is almost certain that Julie is in the kitchen. It is highly unlikely that Brian is a rhino. It is highly likely that if Mary took the apple, and Brian is a rhino, then Julius is a swan. There is a better than even chance that if Mary took the apple, or Brian is a rhino, then Bernhard is green. We doubt that if either Brian is a rhino, or Julie is in the kitchen, then John went to the garden.
hypothesis: It is highly unlikely that either Brian is a rhino, or Julius is a swan.
valid_hypothesis: It is highly unlikely that either Brian is a rhino, or Julius is a swan.
invalid_hypothesis: It is probably the case that either Brian is a rhino, or Julius is a swan.
hypothesis_assertion: Either Brian is a rhino, or Julius is a swan.