context: There is a very good chance that Mary moved to the office. Chances are slight that Greg is white. There is a better than even chance that Lily is white. It is certain that if either Mary moved to the office, or Lily is white, then Brian is green. It is improbable that if Lily is white, or Greg is white, then Winona is a sheep. There is little chance that if Lily is white, or Mary moved to the office, then John went to the hallway.
hypothesis: It is highly unlikely that greg is white, and Brian is green.
valid_hypothesis: It is highly unlikely that greg is white, and Brian is green.
invalid_hypothesis: Chances are about even that greg is white, and Brian is green.
hypothesis_assertion: Greg is white, and Brian is green.