clusters lot is a mean of lighting for moving youth and growing
youth_culture is subculture. youth_subculture is youth_culture. flash_mob_dispersal is atypical_thing. mods is youth_subculture. youth_culture is not subculture. punks is youth_subculture. flash_mob_dispersal is not coordinated_group_activity. rockers is youth_subculture. youth_subculture is not youth_culture. flash_mob_dispersal is coordinated_group_activity.