context: We doubt that Gertrude is a cat. We doubt that Mary left the football. It is improbable that John moved to the office. We doubt that if Gertrude is a cat, and John moved to the office, then Julius is green. It is likely that if Gertrude is a cat, and John moved to the office, then Brian is a lion. It is highly likely that if either John moved to the office, or Gertrude is a cat, then Lily is a rhino.
hypothesis: It is highly unlikely that lily is a rhino, and Mary left the football.
valid_hypothesis: It is highly unlikely that lily is a rhino, and Mary left the football.
invalid_hypothesis: It is probably the case that lily is a rhino, and Mary left the football.
hypothesis_assertion: Lily is a rhino, and Mary left the football.