context: Chances are slight that Jessica is a mouse. It is highly likely that Greg is a swan. It is impossible that Brian is a frog.
hypothesis: There is a very good chance that either Jessica is a mouse, or Greg is a swan.
valid_hypothesis: There is a very good chance that either Jessica is a mouse, or Greg is a swan.
invalid_hypothesis: There is little chance that either Jessica is a mouse, or Greg is a swan.
hypothesis_assertion: Either Jessica is a mouse, or Greg is a swan.