context: It is highly unlikely that Sandra got the apple. It is highly likely that Brian is a swan. We doubt that Fred went to the kitchen. It is certain that if Brian is a swan, or Sandra got the apple, then Mary left the football. It is probably not the case that if Fred went to the kitchen, or Sandra got the apple, then Yann is thirsty. We believe that if either Fred went to the kitchen, or Sandra got the apple, then Julius is a rhino.
hypothesis: We doubt that fred went to the kitchen, and Brian is a swan.
valid_hypothesis: We doubt that fred went to the kitchen, and Brian is a swan.
invalid_hypothesis: It is probable that fred went to the kitchen, and Brian is a swan.
hypothesis_assertion: Fred went to the kitchen, and Brian is a swan.