In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
One example: Passage: The group was occasionally diverted from strategic missions to carry out air support and interdiction missions. It supported Operation Overlord, the invasion of Normandy by attacking transportation targets, including bridges, along with airfields and strong points in France. On D Day, the squadron and the rest of the 446th Group led the first heavy bomber mission of the day. The 446th aided ground forces at Caen and Saint-Lo during July by hitting bridges, gun batteries, and enemy troops. During Operation Market Garden, the attempt to seize a bridgehead across the Rhine in the Netherlands, the 704th dropped supplies to allied troops near Nijmegen. It struck lines of communications during the Battle of the Bulge. During Operation Varsity in March 1945, it supplied ground and airborne troops near Wesel. The squadron flew its last combat mission on 25 April 1945 against Salzburg, Austria. The group had flown 273 missions and had lost 58 aircraft during the war,
. Link Information: Operation Market Garden was a failed World War II military operation fought in the Netherlands from 17 to 25 September 1944. Question: When did the operation during which the 704th dropped supplies to allied troops near Nijmegen begin?
Solution is here: from 17 to 25 September 1944
Explanation: The passage describes the 704th's actions during Operation Market Garden, and the answer specifies when the operation happened.

Now, solve this: Passage: The concerts were digitally recorded by 28 HD cameras, both human operated and robotic, collecting about 500 gigabytes of audio/video per hourroughly a terabyte (TB) per show. To handle their data storage needs, U2 used several products from EMC Corporation, the first time the company had a musical client. To archive uncompressed footage and access it on-demand during the shows' production, the tour staff used an EMC VNXe3200 portable flash storage unit worth about US$25,000. It was configured with 22.9 TB of storage but was expandable up to 450 TB. After each show, tour staff used an EMC Data Domain 2500 system to back up footage. With storage up to 6.6 petabytes and an hourly throughput of 13.4 TB, the Data Domain system could complete a nightly backup before the crew disassembled the stage. On previous tours, U2 relied on USB flash drives for storage. Video imagery was loaded onto the set's video screens with two d3 Technologies d3 44 media servers. Due to the need to load video on the fly, all storage was locally networked, as a cloud storage configuration would have increased latency. EMC's solution satisfied certain requirements dictated by the band, such as: mobility through a flight case form factor; expandable storage; and the capability to handle the large data loads from many cameras.
Link Information: EMC, founded in 1979 Question: What year was the tech company that made the products used by U2 on their concerts found?
Solution:
Answer: 1979