context: It is probably not the case that Lily is white. It is probably the case that Greg is gray. It is impossible that Sandra dropped the milk. Chances are about even that if Lily is white, or Greg is gray, then Julius is a frog. It is impossible that if Greg is gray, and Lily is white, then Fred went to the bedroom. There is almost no chance that if either Lily is white, or Greg is gray, then Brian is green.
hypothesis: Chances are about even that either Julius is a frog, or Sandra dropped the milk.
valid_hypothesis: Chances are about even that either Julius is a frog, or Sandra dropped the milk.
invalid_hypothesis: It is almost certain that either Julius is a frog, or Sandra dropped the milk.
hypothesis_assertion: Either Julius is a frog, or Sandra dropped the milk.