context: It is impossible that Mary went to the kitchen. It is unlikely that Antoine is bored. It is highly likely that Julius is a frog. It is highly likely that if either Mary went to the kitchen, or Julius is a frog, then John left the football. Chances are about even that if either Antoine is bored, or Julius is a frog, then Winona is a mouse. It is likely that if Mary went to the kitchen, and Julius is a frog, then Fred discarded the milk.
hypothesis: There is a very good chance that fred discarded the milk, and John left the football.
valid_hypothesis: It is impossible that fred discarded the milk, and John left the football.
invalid_hypothesis: There is a very good chance that fred discarded the milk, and John left the football.
hypothesis_assertion: Fred discarded the milk, and John left the football.