context: It is probably the case that Bernhard is a swan. We believe that Daniel took the football. It is probably not the case that Greg is gray.
hypothesis: It is highly unlikely that daniel took the football, and Bernhard is a swan.
valid_hypothesis: Chances are about even that daniel took the football, and Bernhard is a swan.
invalid_hypothesis: It is highly unlikely that daniel took the football, and Bernhard is a swan.
hypothesis_assertion: Daniel took the football, and Bernhard is a swan.