context: Chances are about even that Mary went to the bedroom. It is improbable that Lily is a swan. We doubt that Emily is a mouse. It is certain that if Lily is a swan, or Mary went to the bedroom, then John picked up the milk. It is highly unlikely that if Lily is a swan, or Emily is a mouse, then Daniel grabbed the apple. It is almost certain that if Emily is a mouse, or Lily is a swan, then Greg is white.
hypothesis: It is almost certain that greg is white, and John picked up the milk.
valid_hypothesis: We doubt that greg is white, and John picked up the milk.
invalid_hypothesis: It is almost certain that greg is white, and John picked up the milk.
hypothesis_assertion: Greg is white, and John picked up the milk.