context: It is almost certain that Sandra got the milk. Chances are about even that Mary moved to the office. It is improbable that Julie is in the bedroom. Chances are about even that if either Mary moved to the office, or Sandra got the milk, then Daniel left the football. It is likely that if Julie is in the bedroom, or Sandra got the milk, then Brian is a swan. There is almost no chance that if either Julie is in the bedroom, or Sandra got the milk, then Yann is tired.
hypothesis: It is impossible that yann is tired, and Daniel left the football.
valid_hypothesis: It is impossible that yann is tired, and Daniel left the football.
invalid_hypothesis: It is probably the case that yann is tired, and Daniel left the football.
hypothesis_assertion: Yann is tired, and Daniel left the football.