context: It is likely that Mary went to the garden. There is a very good chance that Julius is gray. It is probable that Greg is a swan.
hypothesis: It is almost certain that greg is a swan, and Mary went to the garden.
valid_hypothesis: Chances are about even that greg is a swan, and Mary went to the garden.
invalid_hypothesis: It is almost certain that greg is a swan, and Mary went to the garden.
hypothesis_assertion: Greg is a swan, and Mary went to the garden.