context: It is highly likely that John went to the office. It is unlikely that Winona is a mouse. There is little chance that Greg is a swan. It is improbable that if John went to the office, or Winona is a mouse, then Julius is a rhino. There is a better than even chance that if John went to the office, or Greg is a swan, then Sandra left the apple. It is likely that if Winona is a mouse, and Greg is a swan, then Mary got the milk.
hypothesis: Chances are slight that either John went to the office, or Julius is a rhino.
valid_hypothesis: There is a very good chance that either John went to the office, or Julius is a rhino.
invalid_hypothesis: Chances are slight that either John went to the office, or Julius is a rhino.
hypothesis_assertion: Either John went to the office, or Julius is a rhino.