Given the question: 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. Avro 519 - The Avro 519 was a British bomber aircraft of the First World War a development of the Avro 510 seaplane. They were two-bay biplanes of conventional configuration with greatly uneven span. Two single-seat examples powered by a single 150 hp (110 kW) Sunbeam water-cooled engine were ordered by the RNAS in early 1916. This was followed soon by orders for two modified aircraft for the Royal Flying Corps.
The answer is:
Mean Of Transportation