Definition: 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'.
Input: Passage: Kiss Kiss Kill Kill is the third album by the Danish punk trio HorrorPops. The cover and songs convey a cinematic theme (particularly those with repressed female protagonists and escapist themes, the obvious example being the track "Thelma and Louise"). The album art mimics archetypical B-movie posters, promising "Twelve Tales About Love and Murder... Starring HorrorPops". Only "Boot to Boot" doesn't conform to the film formula. Inspired by the rioting in Copenhagen that followed the destruction of the Ungdomshuset(Youth House), an anarcho-punk squat and self-managed social centre, by police forces in 2007. Of the album's sound, lead singer Patricia Day stated in the Hellcat review of the album that the band was started "So that we could play all kinds of music [but]... We really wanted to get back to the classic new wave feel that we love. And I think our excitement about these songs has made a hell of difference."
Link Information: Although the earliest historical records of Copenhagen are from the end of the 12th century, recent archaeological finds in connection with work on the city's metropolitan rail system revealed the remains of a large merchant's mansion near today's Kongens Nytorv from c. 1020. Excavations in Pilestrde have also led to the discovery of a well from the late 12th century. The remains of an ancient church, with graves dating to the 11th century, have been unearthed near where Strget meets Radhuspladsen.

These finds indicate that Copenhagen's origins as a city go back at least to the 11th century. Substantial discoveries of flint tools in the area provide evidence of human settlements dating to the Stone Age. Many historians believe the town dates to the late Viking Age, and was possibly founded by Sweyn I Forkbeard.
The natural harbour and good herring stocks seem to have attracted fishermen and merchants to the area on a seasonal basis from the 11th century and more permanently in the 13th century. Question: How old is the place that had riots after the destruction of the Ungdomshuset?
Output:
Answer: 900