context: It is probably not the case that Bernhard is a lion. It is highly unlikely that Mary is in the cinema. It is highly unlikely that Julius is a frog. There is little chance that if Mary is in the cinema, or Julius is a frog, then Emily is a mouse. It is probably the case that if Julius is a frog, or Mary is in the cinema, then Lily is a swan. There is a better than even chance that if Mary is in the cinema, and Bernhard is a lion, then John took the apple.
hypothesis: It is impossible that emily is a mouse, and Lily is a swan.
valid_hypothesis: It is impossible that emily is a mouse, and Lily is a swan.
invalid_hypothesis: There is a very good chance that emily is a mouse, and Lily is a swan.
hypothesis_assertion: Emily is a mouse, and Lily is a swan.