Question: The aircraft that uses Runway Overrun Prevention System technology is the first to have both a fuselage and wing structure made primarily of what material?
Context: ROPS (Runway Overrun Prevention System) is a technology used in the Airbus A350 XWB aircraft, which is designed to prevent the overshooting of the runway as the plane is landing. Head Impact Telemetry (HIT) System technology was developed by Simbex (Lebanon, NH) with support from the National Institutes of Health (NIH; R44HD40743 and R01HD048638) to measure and record "in vivo" head impact exposure (i.e. frequency, location, and kinematics of head impact).  Since 2003, the core technology, which includes an array of non-orthogonal accelerometers, data acquisition, RF telemetry hardware, and post-processing software, has been used in a variety of sport and military applications to investigate the relationship between head kinematics and brain injury.  This research has enabled and contributed to improved helmet design and testing methods, changes to sporting rules and regulations, and novel approaches to improve player safety.  Additionally, HIT System technology is the essential feature of Riddell’s Sideline Response System (SRS) - a real-time monitoring tool used by American football teams to manage an athlete’s head impact exposure. The Fokker C.VII-W was a reconnaissance seaplane built in the Netherlands in the late 1920s.  Sharing elements of the highly successful C.V design, the C.VII-W was a conventional, single-bay biplane with wings of unequal span braced with N-struts.  The undercarriage consisted of a standard twin-pontoon arrangement, and the fin and rudder continued through to the ventral side of the fuselage, creating a cruciform tail.  The pilot and observer sat in tandem, open cockpits.  The wing structure was wooden with fabric and plywood covering, and the fuselage was of steel tube construction with fabric covering. Shaykovka (Russian: Шайковка ; State airfields index: ЬУБЙ), also given variously as Kirov Shaykovka, Anisovo Gorod, Anisovo Gorodishche, Shaykovo, Shajkovka, Gorodische, Chaikovka, is an air base in Kaluga Oblast, Russia located 17 km north of Kirov, Kaluga Oblast.  It is a large airfield with hangars and an extensive alert area for fighters.  Appears the runway overrun was being built to extend the runway to 3000 m.  In 2000, Tupolev Tu-160, Tu-95MS, and Tu-22M3 aircraft operated out of this base during a training exercise.  The Natural Resources Defense Council listed the base as a nuclear site in a study. Atlantic Airways Flight 670 was a crash following a runway overrun of a British Aerospace 146-200A at 07:32 on 10 October 2006 at Stord Airport, Sørstokken, Norway.  The aircraft's spoilers failed to deploy, causing inefficient braking.  The Atlantic Airways aircraft fell down the steep cliff at the end of the runway at slow speed and burst into flames, killing four of sixteen people on board. A flying wing is a tailless fixed-wing aircraft that has no definite fuselage.  The crew, payload, fuel, and equipment are typically housed inside the main wing structure, although a flying wing may have various small protuberances such as pods, nacelles, blisters, booms, or vertical stabilizers. The Airbus A350 XWB is a family of long-range, twin-engine wide-body jet airliners developed by European aircraft manufacturer Airbus.  The A350 is the first Airbus aircraft with both fuselage and wing structures made primarily of carbon-fibre-reinforced polymer.  Its variants seat 280 to 366 passengers in typical three-class seating layouts.  The A350 is positioned to succeed the A340, and compete with the Boeing 787 and 777. The Interstate Cadet was an American two-seat tandem, high wing, single-engine monoplane light aircraft.  Around 320 of these aircraft were produced between the years 1941 and 1942 by the Interstate Aircraft and Engineering Corporation based in El Segundo, California.  The construction techniques employed were a welded steel tube fuselage, wood (spruce) wing structure with metal ribs, and fabric covering, all of which were fairly standard in the 1940s. The Vought O2U Corsair was a 1920s biplane scout and observation aircraft.  Made by Vought Corporation, the O2U was ordered by the United States Navy (USN) in 1927.  Powered by a 400 hp (298 kW) Pratt & Whitney R-1340 Wasp engine, it incorporated a steel-tube fuselage structure and a wood wing structure with fabric covering.  Many were seaplanes or amphibians. An engineered materials arrestor system, engineered materials arresting system (EMAS), or arrester bed is a bed of engineered materials built at the end of a runway to reduce the risk of a runway excursion.  Engineered materials are defined in FAA Advisory Circular No 150/5220-22B as "high energy absorbing materials of selected strength, which will reliably and predictably crush under the weight of an aircraft".  While the current technology involves lightweight, crushable concrete blocks, any material that has been approved to meet the FAA Advisory Circular can be used for an EMAS.  The purpose of an EMAS is to stop an aircraft overrun with no human injury and minimal aircraft damage.  The aircraft is slowed by the loss of energy required to crush the EMAS material.  An EMAS is similar in concept to the runaway truck ramp made of gravel or sand.  It is intended to stop an aircraft that has overshot a runway when there is an insufficient free space for a standard runway safety area (RSA).  Multiple patents have been issued on the construction and design on the materials and process.
Answer: carbon-fibre-reinforced polymer