context: There is a better than even chance that Julius is a swan. It is certain that Winona is a mouse. It is unlikely that John put down the milk. It is impossible that if John put down the milk, or Julius is a swan, then Daniel got the football. We doubt that if John put down the milk, or Winona is a mouse, then Jeff discarded the apple. There is little chance that if Winona is a mouse, and Julius is a swan, then Greg is a rhino.
hypothesis: It is impossible that daniel got the football, and Julius is a swan.
valid_hypothesis: It is impossible that daniel got the football, and Julius is a swan.
invalid_hypothesis: It is highly likely that daniel got the football, and Julius is a swan.
hypothesis_assertion: Daniel got the football, and Julius is a swan.