context: There is a very good chance that Mary moved to the garden. There is a better than even chance that Greg is a lion. It is highly unlikely that Fred is in the bedroom. It is certain that if Fred is in the bedroom, or Mary moved to the garden, then Brian is a frog. There is little chance that if either Fred is in the bedroom, or Greg is a lion, then Daniel left the milk. It is unlikely that if Fred is in the bedroom, or Mary moved to the garden, then Lily is a swan.
hypothesis: Chances are about even that greg is a lion, and Brian is a frog.
valid_hypothesis: Chances are about even that greg is a lion, and Brian is a frog.
invalid_hypothesis: It is impossible that greg is a lion, and Brian is a frog.
hypothesis_assertion: Greg is a lion, and Brian is a frog.