Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Nagoya Municipal Subway N3000 series - The Nagoya Municipal Subway N3000 series (N3000) is a rapid transit electric multiple unit (EMU) train type operated by the Transportation Bureau City of Nagoya on the Nagoya Subway Tsurumai Line in Japan since March 2012.
The answer to this question is:
Mean Of Transportation