context: Two boys, one wearing green, the other in yellow, are playing with sidewalk chalk, drawing pictures on the ground.
hypothesis: It is certain that there are two boys drawing lewd pictures in chalk on the ground.
valid_hypothesis: There is almost no chance that there are two boys drawing lewd pictures in chalk on the ground.
invalid_hypothesis: It is certain that there are two boys drawing lewd pictures in chalk on the ground.
hypothesis_assertion: There are two boys drawing lewd pictures in chalk on the ground.