context: It is highly likely that Mary moved to the office. Chances are about even that Bernhard is a swan. Chances are slight that Lily is white. It is likely that if Lily is white, and Mary moved to the office, then Sandra left the milk. Chances are slight that if Lily is white, or Bernhard is a swan, then Brian is a rhino. Chances are slight that if either Lily is white, or Mary moved to the office, then John went to the kitchen.
hypothesis: It is highly likely that john went to the kitchen, or Lily is white.
valid_hypothesis: We doubt that john went to the kitchen, or Lily is white.
invalid_hypothesis: It is highly likely that john went to the kitchen, or Lily is white.
hypothesis_assertion: John went to the kitchen, or Lily is white.