context: We believe that John went to the garden. Chances are about even that Brian is yellow. It is probable that Sandra left the apple. There is a better than even chance that if Sandra left the apple, or John went to the garden, then Julius is green. We believe that if either John went to the garden, or Sandra left the apple, then Lily is a lion. We doubt that if either John went to the garden, or Brian is yellow, then Greg is a swan.
hypothesis: It is probably not the case that greg is a swan, or Lily is a lion.
valid_hypothesis: It is probably not the case that greg is a swan, or Lily is a lion.
invalid_hypothesis: We believe that greg is a swan, or Lily is a lion.
hypothesis_assertion: Greg is a swan, or Lily is a lion.