context: Chances are about even that Lily is a swan. It is probably the case that Bernhard is a rhino. It is probable that John went to the bedroom.
hypothesis: It is likely that lily is a swan, and John went to the bedroom.
valid_hypothesis: It is probably not the case that lily is a swan, and John went to the bedroom.
invalid_hypothesis: It is likely that lily is a swan, and John went to the bedroom.
hypothesis_assertion: Lily is a swan, and John went to the bedroom.