Question: Kazuo Tsukuda, is the chairman of Mitsubishi Heavy Industries, one of the companies that make up the Mitsubishi Group which accounts for 1.4% of what country's GDP?

Context paragraphs:
Mitsubishi: The Mitsubishi Group (三菱グループ , Mitsubishi Gurūpu , also known as the Mitsubishi Group of Companies or Mitsubishi Companies, and informally as the Mitsubishi "Keiretsu") is a group of autonomous Japanese multinational companies in a variety of industries.  Its total revenue is about 1.4% of Japan's GDP.

Mitsubishi Minica: The Mitsubishi Minica is a kei car produced by Mitsubishi Motors for the Japanese domestic market since October 1962.  It was first built by Shin Mitsubishi Heavy-Industries, one of Mitsubishi Heavy Industries' three regional automotive companies until they were merged in 1964.  It is the oldest Mitsubishi passenger car still in production, and the only one which predates the company itself.  In Japan, it was sold at a specific retail chain called "Galant Shop".  In 2011, the car was replaced with the Mitsubishi eK.

Mitsubishi Kasei: The Mitsubishi Kasei (火星 , Mars ) was a two-row, 14-cylinder air-cooled radial engine built by Mitsubishi Heavy Industries and used in a variety of World War II Japanese aircraft, such as Mitsubishi J2M and Mitsubishi G4M.  The Mitsubishi model designation for this engine was A10 while it was an experimental project, in service it was known as the MK4, and known as the Ha101 & Ha111 by the Army and Kasei by the Navy.  According to unified designation code it was Ha-32 of the variants from 11 to 27.

Kazuo Tsukuda: Kazuo Tsukuda (佃 和夫 , Tsukuda Kazuo ) is the chairman of Mitsubishi Heavy Industries, one of the core companies of the Mitsubishi Group.

Mitsubishi Heavy Industries Crystal Mover C810A: The Mitsubishi Heavy Industries Crystal Mover C810A is an Automated People Mover which will be serving on Sengkang LRT Line and Punggol LRT Line as the second generation train after their previous counterparts Mitsubishi Heavy Industries Crystal Mover C810.  Two train sets commenced revenue service on 5 April 2016, with Set 43 and 44 running on the East and West Loop of the Sengkang LRT Line respectively.  Since then, the rest of the fleet progressively went into service.

Mitsubishi PX33: The Mitsubishi PX33 is a prototype passenger car built by Mitsubishi Heavy Industries, the company which would eventually sire Mitsubishi Motors.  Commissioned for military use by the Japanese government in 1934, it was the first Japanese-built sedan to have full-time four-wheel drive, a technology the company would return to fifty years later in pursuit of motorsport success.  Four working prototypes were built, and a version was in development using Mitsubishi's 6.7 litre, 70 PS "445AD" powerplant, Japan's first direct injection diesel engine.  However, the entire PX33 project was cancelled in 1937 after the government decided to prioritize Mitsubishi's manufacturing capabilities on commercial development of trucks and buses.  In 1937, another Japanese company Tokyu Kurogane Kogyo began production of a smaller four-wheel drive car called the Kurogane Type 95.

Mitsubishi Regional Jet: The Mitsubishi Regional Jet (Japanese: 三菱リージョナルジェット ), or MRJ for short, is a twin-engine regional jet aircraft seating 70–90 passengers manufactured by Mitsubishi Aircraft Corporation, a partnership between majority owner Mitsubishi Heavy Industries and Toyota Motor Corporation with design assistance from Toyota affiliate Fuji Heavy Industries, already a manufacturer of aircraft.  It will be the first airliner designed and produced in Japan since the NAMC YS-11 of the 1960s, which was produced at a loss.  Its first flight was in November 2015.  After a fifth delay, deliveries are scheduled to start by mid-2020.

Japanese Aero Engine Corporation: The Japanese Aero Engines Corporation is a consortium of large Japanese companies (Kawasaki Heavy Industries, Ishikawajima-Harima Heavy Industries, Mitsubishi Heavy Industries) that was established in 1981.

Mitsubishi Forklift Trucks: Mitsubishi Forklift Trucks is the brand name used for a range of materials handling products manufactured and distributed by Mitsubishi Heavy Industries and several of its subsidiaries: MCFE Mitsubishi Caterpillar Forklift Europe B.V., MCFA Mitsubishi Caterpillar Forklift America Inc., MCFS Mitsubishi Caterpillar Forklift Asia Pte Ltd, and MCFC Mitsubishi Caterpillar Forklift (Shanghai) Co. Ltd.

Mitsubishi A6M Zero: The Mitsubishi A6M "Zero" is a long-range fighter aircraft, manufactured by Mitsubishi Aircraft Company, a part of Mitsubishi Heavy Industries, and operated by the Imperial Japanese Navy from 1940 to 1945.  The A6M was designated as the Mitsubishi Navy Type 0 carrier fighter (零式艦上戦闘機 , rei-shiki-kanjō-sentōki ) , or the Mitsubishi A6M Rei-sen.  The A6M was usually referred to by its pilots as the "Reisen" (zero fighter), "0" being the last digit of the imperial year 2600 (1940) when it entered service with the Imperial Navy.  The official Allied reporting name was "Zeke", although the use of the name "Zero" was later adopted by the Allies as well.

Supporting paragraphs: Kazuo Tsukuda Mitsubishi
Answer: Japan