context: It is likely that Lily is yellow. It is probably the case that John left the apple. There is a very good chance that Bernhard is white. Chances are slight that if John left the apple, or Bernhard is white, then Gertrude is a wolf. It is almost certain that if Bernhard is white, and John left the apple, then Brian is a frog. It is impossible that if either John left the apple, or Bernhard is white, then Sandra took the apple.
hypothesis: Chances are about even that lily is yellow, or Bernhard is white.
valid_hypothesis: It is almost certain that lily is yellow, or Bernhard is white.
invalid_hypothesis: Chances are about even that lily is yellow, or Bernhard is white.
hypothesis_assertion: Lily is yellow, or Bernhard is white.