context: It is unlikely that Julius is white. It is certain that Brian is green. It is impossible that Gertrude is a mouse. There is a better than even chance that if Gertrude is a mouse, or Julius is white, then Daniel left the football. It is improbable that if Gertrude is a mouse, and Julius is white, then Lily is a swan. We believe that if either Brian is green, or Julius is white, then John went to the garden.
hypothesis: It is impossible that lily is a swan, and Daniel left the football.
valid_hypothesis: It is impossible that lily is a swan, and Daniel left the football.
invalid_hypothesis: It is almost certain that lily is a swan, and Daniel left the football.
hypothesis_assertion: Lily is a swan, and Daniel left the football.