context: It is impossible that Winona is a cat. We believe that Mary left the football. It is highly likely that Julius is a lion.
hypothesis: We believe that either Winona is a cat, or Mary left the football.
valid_hypothesis: We believe that either Winona is a cat, or Mary left the football.
invalid_hypothesis: It is improbable that either Winona is a cat, or Mary left the football.
hypothesis_assertion: Either Winona is a cat, or Mary left the football.