context: We believe that Brian is a swan. It is probably the case that Mary went to the hallway. It is certain that Bernhard is a lion. There is almost no chance that if either Bernhard is a lion, or Brian is a swan, then Lily is green. It is highly likely that if either Bernhard is a lion, or Mary went to the hallway, then John moved to the office. It is likely that if Bernhard is a lion, and Mary went to the hallway, then Daniel is in the garden.
hypothesis: Chances are about even that either Brian is a swan, or Daniel is in the garden.
valid_hypothesis: Chances are about even that either Brian is a swan, or Daniel is in the garden.
invalid_hypothesis: It is impossible that either Brian is a swan, or Daniel is in the garden.
hypothesis_assertion: Either Brian is a swan, or Daniel is in the garden.