context: It is improbable that Mary left the football. There is little chance that Julius is a frog. It is probably the case that Lily is a swan.
hypothesis: It is impossible that either Lily is a swan, or Julius is a frog.
valid_hypothesis: It is probably the case that either Lily is a swan, or Julius is a frog.
invalid_hypothesis: It is impossible that either Lily is a swan, or Julius is a frog.
hypothesis_assertion: Either Lily is a swan, or Julius is a frog.