The Moskalyev SAM-5 was a 1930s Soviet transport or air ambulance monoplane designed by Aleksandr Moskalyev. The type served in small numbers in the Second World War as an air ambulance. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Mean Of Transportation