context: It is highly unlikely that John left the football. It is impossible that Julius is a swan. It is likely that Winona is a wolf. There is almost no chance that if either Winona is a wolf, or John left the football, then Greg is a rhino. Chances are slight that if John left the football, or Winona is a wolf, then Bill went to the garden. There is almost no chance that if John left the football, and Julius is a swan, then Brian is green.
hypothesis: It is highly likely that either John left the football, or Brian is green.
valid_hypothesis: It is highly unlikely that either John left the football, or Brian is green.
invalid_hypothesis: It is highly likely that either John left the football, or Brian is green.
hypothesis_assertion: Either John left the football, or Brian is green.