context: It is probably not the case that John dropped the milk. It is probably not the case that Greg is a frog. It is improbable that Mary went to the kitchen.
hypothesis: There is a very good chance that mary went to the kitchen, and Greg is a frog.
valid_hypothesis: There is almost no chance that mary went to the kitchen, and Greg is a frog.
invalid_hypothesis: There is a very good chance that mary went to the kitchen, and Greg is a frog.
hypothesis_assertion: Mary went to the kitchen, and Greg is a frog.