context: It is impossible that Fred moved to the cinema. It is highly unlikely that Julius is white. There is little chance that Greg is a swan.
hypothesis: There is a very good chance that greg is a swan, and Julius is white.
valid_hypothesis: It is impossible that greg is a swan, and Julius is white.
invalid_hypothesis: There is a very good chance that greg is a swan, and Julius is white.
hypothesis_assertion: Greg is a swan, and Julius is white.