Please answer the following question: FS Class E.636 -  The FS E.636 is a class of Italian articulated electric locomotives. They were introduced in the course of the 1940s until the 1960s and have been decommissioned in 2006. They have been one of the most numerous Italian locomotive group and have been widely employed during their long career hauling every type of train ranging from freight to long range passenger services. 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?
A:
Mean Of Transportation