context: It is unlikely that Greg is a frog. It is highly unlikely that Brian is gray. It is impossible that Bernhard is green. Chances are slight that if Brian is gray, or Greg is a frog, then Emily is a wolf. It is almost certain that if Bernhard is green, or Greg is a frog, then Bill went to the kitchen. There is almost no chance that if Bernhard is green, and Greg is a frog, then Sandra dropped the milk.
hypothesis: We doubt that either Bill went to the kitchen, or Sandra dropped the milk.
valid_hypothesis: We doubt that either Bill went to the kitchen, or Sandra dropped the milk.
invalid_hypothesis: It is probably the case that either Bill went to the kitchen, or Sandra dropped the milk.
hypothesis_assertion: Either Bill went to the kitchen, or Sandra dropped the milk.