context: It is probably the case that Mary went to the office. It is likely that Lily is a frog. It is probable that John moved to the garden. It is highly unlikely that if Lily is a frog, or John moved to the garden, then Sandra grabbed the milk. We doubt that if John moved to the garden, or Mary went to the office, then Julius is a lion. Chances are slight that if either John moved to the garden, or Mary went to the office, then Bernhard is a swan.
hypothesis: We believe that lily is a frog, or Julius is a lion.
valid_hypothesis: We believe that lily is a frog, or Julius is a lion.
invalid_hypothesis: It is impossible that lily is a frog, or Julius is a lion.
hypothesis_assertion: Lily is a frog, or Julius is a lion.