premise1: Three women dress up as ninjas for a costume party.
premise2: A group of people in black outfits drinking beer.
premise3: Some people are dressed up for a costume party.
premise4: Three women are dressed in ninja costumes.
premise: Three women dress up as ninjas for a costume party. A group of people in black outfits drinking beer. Some people are dressed up for a costume party. Three women are dressed in ninja costumes.
hypothesis: A group standing.