context: Chances are about even that Lily is green. Chances are slight that Brian is gray. It is highly likely that Mary is in the park. It is improbable that if either Brian is gray, or Lily is green, then Sandra took the football. It is highly unlikely that if Lily is green, and Mary is in the park, then Julius is a rhino. We doubt that if Mary is in the park, or Lily is green, then Bernhard is a lion.
hypothesis: Chances are about even that lily is green, and Mary is in the park.
valid_hypothesis: Chances are about even that lily is green, and Mary is in the park.
invalid_hypothesis: It is impossible that lily is green, and Mary is in the park.
hypothesis_assertion: Lily is green, and Mary is in the park.