context: It is impossible that Julius is a frog. There is little chance that Brian is a lion. It is probably the case that Lily is a rhino. It is impossible that if Julius is a frog, and Lily is a rhino, then Daniel got the football. It is probably not the case that if Brian is a lion, or Lily is a rhino, then Mary went to the office. It is unlikely that if either Lily is a rhino, or Brian is a lion, then Greg is white.
hypothesis: It is improbable that either Greg is white, or Daniel got the football.
valid_hypothesis: It is improbable that either Greg is white, or Daniel got the football.
invalid_hypothesis: It is certain that either Greg is white, or Daniel got the football.
hypothesis_assertion: Either Greg is white, or Daniel got the football.