Question: In which city was the Ferguson monoplane designed by Harry Ferguson built?

Context paragraphs:
Renard R.17: The Renard R.17 was a Belgian four-seat cabin monoplane designed and built by Societé Anonyme des Avions et Moteurs Renard.  The R.17 was a high-wing cantilever monoplane, the cantilever wing an unusual feature when most contemporary aircraft still had braced wings.  Designed as a high-speed transport for fresh flowers, no aircraft were ordered and the only R.17 was retained by the company until 1946.

Ferguson Research: Harry Ferguson Research Limited was a British company founded by Harry Ferguson who was mostly known as "the father of the modern farm tractor".  He was also a pioneer aviator, becoming one of the first to build and fly his own aeroplane in Ireland, and also went on to develop four-wheel drive systems for cars including pioneering their use in Formula One racing cars.  The company was based in Siskin Drive, in Coventry, England.

Ferguson TE20: The Ferguson TE20 is an agricultural tractor designed by Harry Ferguson.  By far his most successful design, it was manufactured from 1946 until 1956, and was commonly known as the "Little Grey Fergie".  It is light-weight but effective, and a popular collector's item for enthusiasts today.

Ford NAA tractor: The Ford NAA tractor (also known as the Ford NAA) is a tractor that was introduced by Ford as an entirely new model in 1953 and dubbed the "Golden Jubilee".  The "NAA" designation was a reference to the first three digits of the serial number style used starting with this tractor.  It was designed as a replacement for the Ford N-Series tractors. Larger than the 8N, the Golden Jubilee featured live hydraulics, a 50th-year Golden Jubilee badging, an overhead-valve "Red Tiger" four-cylinder engine and streamlined styling, but just as significantly, it was the first tractor Ford built after losing its court battle with Harry Ferguson in 1952 over the patents the Irish inventor held on the Ferguson System three-point hitch.

Ferguson monoplane: The Ferguson monoplane was the first Irish heavier-than-air craft to fly.  The monoplane was designed by Harry Ferguson and built by his brother's company J.B. Ferguson & Company in Belfast.

Miles Magister: The Miles M.14 Magister is a British two-seat monoplane basic trainer aircraft built by the Miles Aircraft for the Royal Air Force and Fleet Air Arm.  Affectionately known as the Maggie, the Magister was based on Miles' civilian Hawk Major and Hawk Trainer and was the first monoplane designed specifically as a trainer for the RAF.  As a low-wing monoplane, it was an ideal introduction to the Spitfire and Hurricane for new pilots.  Its sister design, the Miles Master was an advanced trainer also built by Phillips & Powis at Woodley.

Savoia-Marchetti S.72: The Savoia-Marchetti S.72 was an Italian three-engine transport monoplane designed and built by Savoia-Marchetti as an enlarged and strengthened version of the earlier S.71.  The S.72 was a three-engine, high-wing cantilever monoplane with a fixed tailwheel landing gear.  Designed as a heavy bomber, the prototype was first flown in 1934 powered by three 410 kW (550 hp) Alfa Romeo licence-built Bristol Pegasus radial engines.

Harry Ferguson: Henry George "Harry" Ferguson (4 November 188425 October 1960) was an Irish-born British engineer and inventor who is noted for his role in the development of the modern agricultural tractor, for being the first person in Ireland to build and fly his own aeroplane, and for developing the first four-wheel drive Formula One car, the Ferguson P99.

Piper PT-1: The Piper PT-1 was a 1940s American two-seat primary training monoplane designed and built by Piper Aircraft at Lock Haven.  A low-wing tandem two-seat monoplane, the PT-1 was the first Piper aircraft to have a low-wing.  It had a fabric covering over an all-metal fuselage frame and wooden spar wings and tail unit.  The PT-1 had a retractable tailwheel landing gear and was powered by a 130 hp Franklin 6AC-2980D engine.  No further aircraft were built.  A four-seat development was designed as the Piper PWA-6 which did not go into production either.

Akaflieg Darmstadt D-29: The Darmstadt D-29 was a German experimental monoplane designed and built by Akaflieg Darmstadt (of the Darmstadt University of Technology).  The D-29 was a cantilever low-wing monoplane designed and built during 1936 with a conventional landing gear with a tailskid.  It was powered by a Siemens-Halske Sh 14a radial piston engine and had enclosed tandem cockpits, as well as a number of other features, including hydraulically actuated trailing-edge flaps, a braced T-tail and leading-edge slots.

Supporting paragraphs: Ferguson monoplane Harry Ferguson
Answer: Belfast