context: It is impossible that Brian is a rhino. It is impossible that Julius is a lion. There is a very good chance that Bernhard is a frog. It is almost certain that if Julius is a lion, and Brian is a rhino, then Lily is white. It is probably the case that if either Bernhard is a frog, or Brian is a rhino, then Jessica is a mouse. We doubt that if Brian is a rhino, and Julius is a lion, then Greg is a swan.
hypothesis: It is impossible that either Brian is a rhino, or Lily is white.
valid_hypothesis: It is impossible that either Brian is a rhino, or Lily is white.
invalid_hypothesis: There is a very good chance that either Brian is a rhino, or Lily is white.
hypothesis_assertion: Either Brian is a rhino, or Lily is white.