Please answer the following question: Keio 8000 series -  The Keio 8000 series (京王8000系) is an electric multiple unit (EMU) train type operated by the Keio Corporation on commuter services in the Tokyo area of Japan. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Answer:
Mean Of Transportation