context: It is unlikely that Greg is a swan. We doubt that Julie is in the bedroom. We believe that Brian is a lion. It is unlikely that if Greg is a swan, or Julie is in the bedroom, then Mary moved to the office. We believe that if Greg is a swan, and Julie is in the bedroom, then Julius is a frog. Chances are about even that if either Greg is a swan, or Brian is a lion, then Lily is a rhino.
hypothesis: It is probably the case that either Julius is a frog, or Greg is a swan.
valid_hypothesis: We doubt that either Julius is a frog, or Greg is a swan.
invalid_hypothesis: It is probably the case that either Julius is a frog, or Greg is a swan.
hypothesis_assertion: Either Julius is a frog, or Greg is a swan.