Anchor: A group of people all dressed up marching along the road playing instruments and holding flags and other props.
Entailed: a group of people gather along the road and start playing instruments.
Contradiction: a death metal band plays in a garage
Contradiction: The people are sitting quietly around a campfire.
Contradiction: A group of people don't have any instruments to play.
Contradiction: The people are in the library.
Contradiction: a group of people are standing on a bridge playing dodgeball