context: Chances are slight that Julius is green. It is likely that Greg is a swan. There is little chance that Mary moved to the garden.
hypothesis: It is probably the case that mary moved to the garden, and Greg is a swan.
valid_hypothesis: It is highly unlikely that mary moved to the garden, and Greg is a swan.
invalid_hypothesis: It is probably the case that mary moved to the garden, and Greg is a swan.
hypothesis_assertion: Mary moved to the garden, and Greg is a swan.