context: Chances are slight that Bernhard is a rhino. We believe that Brian is a lion. There is little chance that Lily is a swan.
hypothesis: It is likely that either Lily is a swan, or Brian is a lion.
valid_hypothesis: It is likely that either Lily is a swan, or Brian is a lion.
invalid_hypothesis: There is almost no chance that either Lily is a swan, or Brian is a lion.
hypothesis_assertion: Either Lily is a swan, or Brian is a lion.