context: Chances are about even that Brian is a swan. There is a better than even chance that Sumit is bored. It is improbable that Daniel got the milk. It is probably not the case that if either Daniel got the milk, or Brian is a swan, then Julius is a lion. There is little chance that if either Sumit is bored, or Brian is a swan, then Greg is green. Chances are slight that if Daniel got the milk, and Brian is a swan, then Mary dropped the milk.
hypothesis: Chances are about even that either Julius is a lion, or Brian is a swan.
valid_hypothesis: Chances are about even that either Julius is a lion, or Brian is a swan.
invalid_hypothesis: There is almost no chance that either Julius is a lion, or Brian is a swan.
hypothesis_assertion: Either Julius is a lion, or Brian is a swan.