context: We believe that Greg is gray. Chances are slight that Brian is a lion. There is little chance that Mary went to the office. It is almost certain that if Brian is a lion, or Greg is gray, then Emily is a cat. It is unlikely that if Greg is gray, or Mary went to the office, then John took the apple. It is probably the case that if Brian is a lion, or Greg is gray, then Bernhard is a swan.
hypothesis: We believe that john took the apple, or Emily is a cat.
valid_hypothesis: We believe that john took the apple, or Emily is a cat.
invalid_hypothesis: It is impossible that john took the apple, or Emily is a cat.
hypothesis_assertion: John took the apple, or Emily is a cat.