context: It is certain that Bernhard is yellow. It is likely that Greg is green. We believe that John went to the kitchen. There is almost no chance that if Bernhard is yellow, and John went to the kitchen, then Emily is a sheep. It is highly likely that if Bernhard is yellow, or Greg is green, then Lily is gray. It is highly unlikely that if John went to the kitchen, and Bernhard is yellow, then Antoine is hungry.
hypothesis: It is impossible that john went to the kitchen, and Greg is green.
valid_hypothesis: Chances are about even that john went to the kitchen, and Greg is green.
invalid_hypothesis: It is impossible that john went to the kitchen, and Greg is green.
hypothesis_assertion: John went to the kitchen, and Greg is green.