Question: Mazda's Mazda6 belongs to which country's car manufacturer?

Context:
Mazda RX-9
The Mazda RX-9 is a sports car produced by the Japanese automaker Mazda scheduled for release in 2020.
 "Holiday Auto", a Japanese magazine, reported it will be previewed at the 2017 Tokyo Auto Show, and the final production model will be featured at the same event in 2019.
 The car will be released in January 2020, to coincide with Mazda's 100th anniversary, and will be initially priced at eight million yen (US$(8000000/ 105.944781 )round0 in 2015).
 It is believed it will showcase the return of the Wankel rotary engine, but CEO Masamichi Kogai said Mazda will not launch another rotary engine.
 In the middle of the September 2017, Mazda has filed a patent application for an engine that uses two conventional turbochargers and an electric supercharger.
 The engine looks compact, can replace the rotary engine and possibly be included in RX-9 production.
Mazda 929
The Mazda 929 is a full-size car which was sold by the Japanese automobile manufacturer Mazda between 1973 and 1997.
 Mazda utilized the 929 nameplate for export markets only, badge engineering its Luce model until 1991 and then transferring the name to export specification Sentia models.
 Between 1982 and 1986, Mazda also used the 929 nameplate for its Cosmo coupe in certain export markets.
Mazda Takeri
The Mazda Takeri was a concept car made by Mazda.
 It was a preview to the next generation Mazda6.
Mazda GTP
The Mazda GTP is an IMSA GTP car that was built by Pierre Honegger in 1981.
 Based on a Mazda RX-7, the car initially competed in the GTX category as the Mazda RX-7 GTP, before it was rebuilt for the IMSA GTP category in 1983.
 Throughout its career, the car used a Mazda 13B Wankel rotary engine, similar to that used in the production RX-7s.
 Although the rotary-engined sports prototypes generally had a reputation of being very reliable, the Mazda GTP frequently failed to finish races, and was never able to better the eighth place achieved at the 1983 24 Hours of Daytona.
 In 1986, one car was purchased by Erie Scientific Racing, and rebuilt to become the Badger BB.
 This car was no more successful or reliable than its predecessor, and was last used in 1989, by which point it was owned by Jack Engelhardt.
 The other car, meanwhile, was rebuilt by Honegger into the Denali Speedcar, which was used with moderate success in 1986 and 1987.
Mazda Taiki
The Mazda Taiki is a one-off concept car produced by Mazda, and is the fourth car in Mazda's 'Nagare' design series.
 Mazda says the Taiki "reflects one possible direction for a future generation of Mazda sports cars aimed at helping to create a sustainable society".
Nissan Altima
The Nissan Altima (Japanese: 日産・アルティマ ) is a mid-size car which has been manufactured by Nissan since 1992.
 It is a continuation of the Nissan Bluebird line, which began in 1957.
 The Nissan Altima mainly competes against cars such as Chevrolet's Malibu, Ford's Fusion, Honda's Accord, Hyundai's Sonata, Mazda's Mazda6, Subaru's Legacy, Kia's Optima, Toyota's Camry and Volkswagen's Passat.
Mazda Hakaze Concept
The Mazda Hakaze Concept is a concept car that was revealed in early February 2007 by Japanese manufacturer Mazda.
 Its major design elements come from a new design language developed by Mazda called Nagare, developed by Laurens van den Acker, Mazda Global Design Director.
 It translates to "flow".
 This element has been used on past Mazda concept cars such as: Mazda Nagare; Mazda Ryuga; Mazda Kabura.
Mazda Kazamai
The Mazda Kazamai is a concept car made by the Japanese car manufacturer Mazda.
 It was first introduced at the 2008 Moscow International Motor Show in August.
Mazda6
The Mazda 6 or Mazda6 (known as the Mazda Atenza in China and Japan, derived from the Italian "attenzione") is a Midsize family produced by the Japanese car manufacturer Mazda since 2002.
 It replaced the long-produced Mazda Capella (616, 626) in 2002.
 The Mazda6 sold more than one million units faster than all previous Mazdas.
Bahman Group
Bahman Group (Persian: ‎ ‎ ) is an Iran-based manufacturer of vehicles under license by Mazda.
 Bahman Group was founded in 1952 under the title of Iran Khalij Co by Mr. Amanollah Sarbaz and his son.
 They have since then manufactured, under license, versions of Mazda's trucks, including versions of the Mazda B-Series pickups and the previous generation Mazda 323 and Mazda 3.
 They also manufacture Isuzu buses and FAW trucks.
 Currently, the group is headed by Mohammad Reza Soroush.

Answer: Japanese