Please answer the following question: Pashinin I-21 - The Pashinin I-21 (not to be confused with the Ilyushin TsKB-32 also known as I-21) was an early 1940s Soviet fighter prototype. Designed by Mikhail M. Pashinin the I-21 was built to incorporate lessons learned from the combat experiences of Soviet pilots during the Spanish Civil War and the Nomonhan Incident with the Empire 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?
A:
Mean Of Transportation