Anchor: A group of people in matching native costume are assembled and appear to be participating in a ceremony.
Entailed: People with costumes
Contradiction: A group of people is staging a sit-in.
Contradiction: A group of dogs are in costume and will participate in a ceremony.
Contradiction: Two people eat cake in a park.
Contradiction: A group of people are wearing police uniforms conducting an arrest.
Contradiction: Nobody has a costume.