context: We doubt that Bernhard is a frog. It is certain that Greg is a rhino. Chances are slight that Yann is tired. It is improbable that if Greg is a rhino, or Yann is tired, then Julius is a frog. There is a very good chance that if Bernhard is a frog, and Greg is a rhino, then Brian is green. It is highly unlikely that if Bernhard is a frog, or Greg is a rhino, then Lily is yellow.
hypothesis: There is a very good chance that brian is green, and Lily is yellow.
valid_hypothesis: It is impossible that brian is green, and Lily is yellow.
invalid_hypothesis: There is a very good chance that brian is green, and Lily is yellow.
hypothesis_assertion: Brian is green, and Lily is yellow.