context: It is highly unlikely that Emily is a mouse. It is certain that Greg is gray. It is impossible that Mary left the milk.
hypothesis: It is impossible that mary left the milk, or Greg is gray.
valid_hypothesis: It is certain that mary left the milk, or Greg is gray.
invalid_hypothesis: It is impossible that mary left the milk, or Greg is gray.
hypothesis_assertion: Mary left the milk, or Greg is gray.