context: We doubt that Winona is a sheep. Chances are about even that Bill discarded the milk. Chances are slight that Lily is green.
hypothesis: Chances are about even that either Lily is green, or Bill discarded the milk.
valid_hypothesis: Chances are about even that either Lily is green, or Bill discarded the milk.
invalid_hypothesis: It is almost certain that either Lily is green, or Bill discarded the milk.
hypothesis_assertion: Either Lily is green, or Bill discarded the milk.