context: It is probable that John went to the office. Chances are slight that Bernhard is white. It is impossible that Mary got the milk. There is a better than even chance that if John went to the office, and Mary got the milk, then Lily is green. We believe that if John went to the office, and Bernhard is white, then Sandra left the apple. It is impossible that if John went to the office, and Bernhard is white, then Greg is green.
hypothesis: It is highly likely that either Sandra left the apple, or Bernhard is white.
valid_hypothesis: It is highly unlikely that either Sandra left the apple, or Bernhard is white.
invalid_hypothesis: It is highly likely that either Sandra left the apple, or Bernhard is white.
hypothesis_assertion: Either Sandra left the apple, or Bernhard is white.