context: Chances are slight that Brian is a lion. It is highly unlikely that Lily is a rhino. We doubt that Sandra got the football.
hypothesis: It is probably not the case that sandra got the football, or Brian is a lion.
valid_hypothesis: It is probably not the case that sandra got the football, or Brian is a lion.
invalid_hypothesis: It is likely that sandra got the football, or Brian is a lion.
hypothesis_assertion: Sandra got the football, or Brian is a lion.