context: There is little chance that Greg is a swan. It is unlikely that Julius is white. It is likely that Winona is a cat. It is almost certain that if Greg is a swan, and Julius is white, then Jessica is a mouse. It is highly unlikely that if Winona is a cat, and Greg is a swan, then Mary took the apple. There is a very good chance that if Julius is white, and Greg is a swan, then John went to the garden.
hypothesis: It is probably not the case that either Greg is a swan, or Winona is a cat.
valid_hypothesis: It is probable that either Greg is a swan, or Winona is a cat.
invalid_hypothesis: It is probably not the case that either Greg is a swan, or Winona is a cat.
hypothesis_assertion: Either Greg is a swan, or Winona is a cat.