context: A rocker standing with one foot on the stage holding the microphone attached to the stand over his head.
hypothesis: There is a better than even chance that a rocker is doing soundcheck for his performance by speaking into the microphone.
valid_hypothesis: There is a better than even chance that a rocker is doing soundcheck for his performance by speaking into the microphone.
invalid_hypothesis: Chances are slight that a rocker is doing soundcheck for his performance by speaking into the microphone.
hypothesis_assertion: A rocker is doing soundcheck for his performance by speaking into the microphone.