Question: When did Nissan along with the creator of the Hino Dutro and the maker of the Acura Legend open US assembly plants?

Context paragraphs:
paragraph_text: Some buyers lamented the small size of the first Japanese compacts, and both Toyota and Nissan (then known as Datsun) introduced larger cars such as the Toyota Corona Mark II, the Toyota Cressida, the Mazda 616 and Datsun 810, which added passenger space and amenities such as air conditioning, power steering, AM-FM radios, and even power windows and central locking without increasing the price of the vehicle. A decade after the 1973 oil crisis, Honda, Toyota and Nissan, affected by the 1981 voluntary export restraints, opened US assembly plants and established their luxury divisions (Acura, Lexus and Infiniti, respectively) to distinguish themselves from their mass-market brands.
title: 1973 oil crisis
paragraph_text: Seattle remained the corporate headquarters of Boeing until 2001, when the company separated its headquarters from its major production facilities; the headquarters were moved to Chicago. The Seattle area is still home to Boeing's Renton narrow-body plant (where the 707, 720, 727, and 757 were assembled, and the 737 is assembled today) and Everett wide-body plant (assembly plant for the 747, 767, 777, and 787). The company's credit union for employees, BECU, remains based in the Seattle area, though it is now open to all residents of Washington.
title: Seattle
paragraph_text: The Acura EL is a subcompact executive car that was built at Honda's Alliston, Ontario, plant, and also the first Acura built in Canada. The EL is a badge-engineered Honda Civic with a higher level of features.
title: Acura EL
paragraph_text: The Nissan Rogue is a compact crossover SUV produced by the Japanese automaker Nissan. It made its debut in October 2007 for the 2008 model year. The current model, the second generation launched in 2013, is the North American version of the Nissan X-Trail. It is currently Nissan's best - selling vehicle in the United States.
title: Nissan Rogue
paragraph_text: Ford South Africa was based in Port Elizabeth (now part of the Eastern Cape province) and had been operating since 1923. In the early 1980s, it had both a vehicle assembly plant and an engine plant in Struandale, together with an older assembly plant in Neave. After the merger with Sigma and the formation of Samcor, the engine plant continued to be operated by Samcor and in 2015 is still operating under Ford ownership. Both the assembly plants were closed and all vehicle production transferred to Samcor's Silverton Assembly Plant in Pretoria. The Struandale assembly plant was subsequently sold to Delta Motor Corporation (General Motors).
title: Samcor
paragraph_text: The Jonga was a Nissan designed vehicle used by the Indian Army. Jonga was an acronym for Jabalpur Ordnance aNd Guncarriage Assembly.
title: Jonga
paragraph_text: By the early 1960s, the US had begun placing stiff import tariffs on certain vehicles. The so - called ``chicken tax ''of 1964 placed a 25% tax on imported light trucks. In response to the tariff, Toyota, Nissan Motor Co. and Honda Motor Co. began building plants in the US by the early 1980s.
title: Toyota
paragraph_text: The Acura RLX is a full-size luxury sedan manufactured by Honda and sold under their Acura division, released in 2013. Succeeding the Acura RL, the RLX offers two versions, a front-wheel drive base model equipped with Acura's Precision All-Wheel Steer (P-AWS) four-wheel steering system, and a hybrid variant featuring SH-AWD that serves as Acura's flagship. The JDM version, the Honda Legend, is only offered with the SH-AWD powertrain.
title: Acura RLX
paragraph_text: The first-generation Acura RL was a rebadged version of the third-generation Honda Legend, and was first introduced to the North American market in 1996, to replace the second-generation Acura Legend. The second-generation Acura RL was a rebadged version of the fourth-generation Honda Legend, introduced to the North American market in September 2004, as a 2005 model. This iteration of the RL received an extensive mid-generational facelift for the 2009 model year, and a further update for 2011. The third-generation debuted for the 2014 model year as the Acura RLX.
title: Acura RL
paragraph_text: The Acura Legend is a mid-size luxury/executive car manufactured by Honda. It was sold in the U.S., Canada, and parts of China under Honda's luxury brand, Acura, from 1985 to 1995, as both a sedan, which was classified as a full-size car, and a coupe, which was classified as a mid-size car (similar to how the Honda Accord is set up today). It was the first flagship sedan sold under the Acura nameplate, until being renamed in 1996 as the Acura 3.5RL. The 3.5RL was the North American version of the KA9 series Honda Legend.
title: Acura Legend
paragraph_text: Second generation Acura RDX 2013 Acura RDX Overview Production Mar 2012 -- present Model years 2013 -- present Assembly East Liberty, Ohio, United States East Liberty Auto Plant Powertrain Engine 3.0 L J30Y1 V6 (China Only) 3.5 L J35Y V6 Transmission 6 - speed automatic Dimensions Wheelbase 105.7 inches (9 foot 6 inches Length 183.7 inches (16 ft 7 inches Width 73 inches (6 foot 7 inches) Height 64.2 inches (5 foot 8 inches Curb weight 3,717 lb (1,686 kg) (FWD) 3,838 lb (1,741 kg) (AWD)
title: Acura RDX
paragraph_text: The Nissan Fuga (Japanese: 日産・フーガ "Nissan Fūga") is a mid-size luxury sedan produced by Japanese automaker Nissan since October 2004. It is built on a wider, stretched wheelbase version of the Nissan FM platform. After the Nissan Cima and Nissan President were discontinued in August 2010, the Fuga became Nissan's flagship vehicle. In North America and Europe, the Fuga is sold as the second and third-generation Infiniti M (Q70 from 2014), where it has been the flagship of the Infiniti luxury division of Nissan since 2006.
title: Nissan Fuga
paragraph_text: Janesville Assembly Plant is a former automobile factory owned by General Motors located in Janesville, Wisconsin. Opened in 1919, it was the oldest operating GM plant when it was largely idled in December 2008, and ceased all remaining production on April 23, 2009. The demolition of the plant began in April 2018.
title: Janesville Assembly Plant
paragraph_text: Norfolk Assembly was a Ford manufacturing plant that opened on April 20, 1925 on the Elizabeth River, near downtown Norfolk, Virginia -- closing in 2007.
title: Norfolk Assembly
paragraph_text: Nissan Rogue 2014 S AWD Overview Production 2013 -- present Assembly Smyrna, Tennessee, United States (Nissan USA) Designer Keisuke Otsuki Body and chassis Platform Nissan CMF platform (CMF - CD) Related Nissan Rogue Nissan Qashqai Renault Koleos Powertrain Engine Petrol 2.0 L MR20DD 143 hp (106 kW) I4 (144 hp for X-Trail Hybrid) 2.5 L QR25DE 170 hp (126 kW) I4 Diesel 2.0 L 177 bhp (130kW) I4) 1.6 L Y9M 130 bhp (96 kW) I4 Transmission 6 - speed manual 6 - speed automatic CVT Dimensions Wheelbase 2,705 mm (106.5 in) Length 4,641 mm (182.7 in) Width 1,820 mm (71.65 in) Height 1,709 mm (67.3 in) Chronology Predecessor Nissan Qashqai + 2 (7 passenger models only)
title: Nissan Rogue
paragraph_text: The Infiniti J30, or Nissan Leopard J Ferie in Japan, was a rear wheel drive luxury car. The J30 went into production on April 7, 1992 as a 1993 model to replace the M30 (which was a coupe), and was launched in the United States after its competitor, the Lexus GS. The car was designed to slot between the smaller G20 and the larger Q45, as Infiniti's first mid-size sedan to compete directly with the Acura Legend. Also, it was fairly small but featured rounded styling uncharacteristic of the crowded executive car class, that is now reminiscent of a four-door coupé. Chief designer for the J30 was Jerry Hirshberg, president of Nissan Design International (NDI) and exterior designer Doug Wilson in 1988-1989. Design work was frozen in 1989. In a promotional video produced in 1994, it was referred to as a "personal luxury sedan" as attempt to define it as a four-door coupé. It has the round looks of the Nissan Altima/Bluebird U13.
title: Infiniti J30
paragraph_text: The Infiniti Kuraza is a concept car designed by Nissan, under the Infiniti brand at the Nissan Technical Center in Atsugi, Japan, headed by product design director Kojii Nagano. It made its world debut in Detroit, at the 2005 North American International Auto Show. The Infiniti Kuraza ultimately never made it to production.
title: Infiniti Kuraza
paragraph_text: The Hino Dutro () is a light commercial truck shared with the Toyota Dyna, manufactured by Hino Motors. Like the Dyna and its twin Toyoace, the Dutro is built on the U300 platform for standard cab, or U400 platform for the wide cab and offered in many different chassis type suitable for different purposes. The Dutro took over from the earlier Ranger 2 (and Ranger 3), a badge-engineered version of Daihatsu's Delta series. Outside of Japan, it is also known as the '300 series'.
title: Hino Dutro
paragraph_text: BMW released the first iPod automobile interface, allowing drivers of newer BMW vehicles to control an iPod using either the built-in steering wheel controls or the radio head-unit buttons. Apple announced in 2005 that similar systems would be available for other vehicle brands, including Mercedes-Benz, Volvo, Nissan, Toyota, Alfa Romeo, Ferrari, Acura, Audi, Honda, Renault, Infiniti and Volkswagen. Scion offers standard iPod connectivity on all their cars.
title: IPod
paragraph_text: The Acura ZDX is a mid-size luxury crossover SUV developed by Honda for its upmarket brand Acura. The car was originally scheduled to be called the Acura MSX. The ZDX debuted at the 2009 New York International Auto Show on April 8, 2009. The vehicle was also the first to be completely designed at Acura's southern California design studio in Torrance.
title: Acura ZDX

Reasoning steps:
Who made Acura Legend? >>>> Honda
Which corporation created Hino Dutro? >>>> Toyota
When did Honda , Toyota and Nissan open US assembly plants? >>>> 1981

Answer: spans: 1981