a month is a mean of artificial environments
artificial_island is tangible_thing. artificial_water_feature is non_agent_like_place. artificial_water_feature is tangible_thing. anomalistic_month is month. artificiality is unnaturalness. artificial_island is unnatural_thing. aura is artificial_satellite. artificial_water_feature is unnatural_thing. artificial_lighting is intangible_artifact. opportunity is artificial_satellite.