context: We doubt that Mary went to the bedroom. It is probably the case that Greg is gray. There is little chance that Lily is a swan.
hypothesis: We believe that greg is gray, or Lily is a swan.
valid_hypothesis: We believe that greg is gray, or Lily is a swan.
invalid_hypothesis: It is unlikely that greg is gray, or Lily is a swan.
hypothesis_assertion: Greg is gray, or Lily is a swan.