context: Chances are about even that Greg is a swan. It is highly likely that Mary went to the hallway. It is probably the case that Lily is green.
hypothesis: It is almost certain that greg is a swan, or Mary went to the hallway.
valid_hypothesis: It is almost certain that greg is a swan, or Mary went to the hallway.
invalid_hypothesis: We doubt that greg is a swan, or Mary went to the hallway.
hypothesis_assertion: Greg is a swan, or Mary went to the hallway.