context: Two men are drumming, one is standing and one is sitting down.
hypothesis: It is probably the case that some members of the marching band are sitting while others are standing.
valid_hypothesis: It is probably the case that some members of the marching band are sitting while others are standing.
invalid_hypothesis: It is impossible that some members of the marching band are sitting while others are standing.
hypothesis_assertion: Some members of the marching band are sitting while others are standing.