context: Chances are slight that Mary went to the garden. It is improbable that Julius is a swan. Chances are about even that Jessica is a mouse.
hypothesis: It is unlikely that either Mary went to the garden, or Julius is a swan.
valid_hypothesis: It is unlikely that either Mary went to the garden, or Julius is a swan.
invalid_hypothesis: It is likely that either Mary went to the garden, or Julius is a swan.
hypothesis_assertion: Either Mary went to the garden, or Julius is a swan.