context: It is likely that Brian is white. Chances are about even that Lily is a rhino. We believe that Greg is green.
hypothesis: It is highly unlikely that greg is green, and Lily is a rhino.
valid_hypothesis: Chances are about even that greg is green, and Lily is a rhino.
invalid_hypothesis: It is highly unlikely that greg is green, and Lily is a rhino.
hypothesis_assertion: Greg is green, and Lily is a rhino.