context: Chances are slight that Brian is a rhino. Chances are about even that Mary went to the office. Chances are slight that Lily is white.
hypothesis: It is highly unlikely that lily is white, and Mary went to the office.
valid_hypothesis: It is highly unlikely that lily is white, and Mary went to the office.
invalid_hypothesis: It is highly likely that lily is white, and Mary went to the office.
hypothesis_assertion: Lily is white, and Mary went to the office.