context: Chances are about even that Mary dropped the milk. There is almost no chance that Julius is white. It is improbable that Emily is a cat. It is highly likely that if Julius is white, or Mary dropped the milk, then Greg is a swan. It is probable that if Julius is white, or Emily is a cat, then Brian is a frog. It is highly likely that if Julius is white, and Mary dropped the milk, then Lily is a rhino.
hypothesis: It is improbable that emily is a cat, or Lily is a rhino.
valid_hypothesis: It is improbable that emily is a cat, or Lily is a rhino.
invalid_hypothesis: It is probable that emily is a cat, or Lily is a rhino.
hypothesis_assertion: Emily is a cat, or Lily is a rhino.