context: There is a very good chance that Julius is a swan. It is improbable that John took the football. It is impossible that Bernhard is gray. There is almost no chance that if either Bernhard is gray, or John took the football, then Brian is a rhino. Chances are about even that if John took the football, or Bernhard is gray, then Lily is a lion. There is a very good chance that if John took the football, or Bernhard is gray, then Greg is gray.
hypothesis: It is highly unlikely that julius is a swan, or Brian is a rhino.
valid_hypothesis: There is a very good chance that julius is a swan, or Brian is a rhino.
invalid_hypothesis: It is highly unlikely that julius is a swan, or Brian is a rhino.
hypothesis_assertion: Julius is a swan, or Brian is a rhino.