Input: Read this: Various industrial businesses are located in Hannover. The Volkswagen Commercial Vehicles Transporter (VWN) factory at Hannover-Stöcken is the biggest employer in the region and operates a huge plant at the northern edge of town adjoining the Mittellandkanal and Motorway A2. Jointly with a factory of German tire and automobile parts manufacturer Continental AG, they have a coal-burning power plant. Continental AG, founded in Hanover in 1871, is one of the city's major companies, as is Sennheiser. Since 2008 a take-over is in progress: the Schaeffler Group from Herzogenaurach (Bavaria) holds the majority of the stock but were required due to the financial crisis to deposit the options as securities at banks. TUI AG has its HQ in Hanover. Hanover is home to many insurance companies, many of which operate only in Germany. One major global reinsurance company is Hannover Re, whose headquarters are east of the city centre.
Question: Who holds minority stock in Continental AG?

Output: unanswerable


Input: Read this: Since such mass (kinetic energies of particles, the energy of trapped electromagnetic radiation and stored potential energy of repulsive fields) is measured as part of the mass of ordinary matter in complex systems, the "matter" status of "massless particles" and fields of force becomes unclear in such systems. These problems contribute to the lack of a rigorous definition of matter in science, although mass is easier to define as the total stress–energy above (this is also what is weighed on a scale, and what is the source of gravity).[citation needed]
Question: The mass of kinetic energy particles is not considered part of what?

Output: unanswerable


Input: Read this: For many years Arsenal's away colours were white shirts and either black or white shorts. In the 1969–70 season, Arsenal introduced an away kit of yellow shirts with blue shorts. This kit was worn in the 1971 FA Cup Final as Arsenal beat Liverpool to secure the double for the first time in their history. Arsenal reached the FA Cup final again the following year wearing the red and white home strip and were beaten by Leeds United. Arsenal then competed in three consecutive FA Cup finals between 1978 and 1980 wearing their "lucky" yellow and blue strip, which remained the club's away strip until the release of a green and navy away kit in 1982–83. The following season, Arsenal returned to the yellow and blue scheme, albeit with a darker shade of blue than before.
Question: What color shirts were worn by Liverpool players in 1971?

Output: unanswerable


Input: Read this: Although the Canadian Armed Forces are a single service, there are three similar but distinctive environmental uniforms (DEUs): navy blue (which is actually black) for the navy, rifle green for the army, and light blue for the air force. CAF members in operational occupations generally wear the DEU to which their occupation "belongs." CAF members in non-operational occupations (the "purple" trades) are allocated a uniform according to the "distribution" of their branch within the CAF, association of the branch with one of the former services, and the individual's initial preference. Therefore, on any given day, in any given CAF unit, all three coloured uniforms may be seen.
Question: What are the "red" trades?

Output:
unanswerable