context: A line of rollerbladers crouch down aerodynamically
hypothesis: Chances are about even that a group of rollerbladers are performing a trick for the crowd.
valid_hypothesis: It is highly unlikely that a group of rollerbladers are performing a trick for the crowd.
invalid_hypothesis: Chances are about even that a group of rollerbladers are performing a trick for the crowd.
hypothesis_assertion: A group of rollerbladers are performing a trick for the crowd.