context: It is impossible that Mary got the football. It is probably the case that Lily is a swan. There is a very good chance that Julius is white. It is probable that if either Lily is a swan, or Mary got the football, then Bernhard is a rhino. There is a better than even chance that if Julius is white, or Mary got the football, then John went to the garden. It is probably not the case that if either Mary got the football, or Julius is white, then Greg is a lion.
hypothesis: It is impossible that julius is white, and Mary got the football.
valid_hypothesis: It is impossible that julius is white, and Mary got the football.
invalid_hypothesis: There is a better than even chance that julius is white, and Mary got the football.
hypothesis_assertion: Julius is white, and Mary got the football.