context: Competitive bikers in an inside race cross a line with one biker in blue and white raising his arm.
hypothesis: There is almost no chance that a race between competitive bikers on an inside track begins as a biker raises his arm.
valid_hypothesis: There is almost no chance that a race between competitive bikers on an inside track begins as a biker raises his arm.
invalid_hypothesis: There is a better than even chance that a race between competitive bikers on an inside track begins as a biker raises his arm.
hypothesis_assertion: A race between competitive bikers on an inside track begins as a biker raises his arm.