context: It is improbable that Greg is a swan. There is a better than even chance that Bill discarded the milk. It is probably the case that John dropped the apple.
hypothesis: It is improbable that either Greg is a swan, or Bill discarded the milk.
valid_hypothesis: There is a better than even chance that either Greg is a swan, or Bill discarded the milk.
invalid_hypothesis: It is improbable that either Greg is a swan, or Bill discarded the milk.
hypothesis_assertion: Either Greg is a swan, or Bill discarded the milk.