Input: Read this: Juan Atkins, an originator of Detroit techno music, claims the term "house" reflected the exclusive association of particular tracks with particular clubs and DJs; those records helped differentiate the clubs and DJs, and thus were considered to be their "house" records. In an effort to maintain such exclusives, the DJs were inspired to create their own "house" records.
Question: What did Atkins claim the term house reflected?

Output: the exclusive association of particular tracks with particular clubs and DJs


Input: Read this: Specification-based testing aims to test the functionality of software according to the applicable requirements. This level of testing usually requires thorough test cases to be provided to the tester, who then can simply verify that for a given input, the output value (or behavior), either "is" or "is not" the same as the expected value specified in the test case. Test cases are built around specifications and requirements, i.e., what the application is supposed to do. It uses external descriptions of the software, including specifications, requirements, and designs to derive test cases. These tests can be functional or non-functional, though usually functional.
Question: What are the test cases built around?

Output: specifications and requirements


Input: Read this: Literature consists of written productions, often restricted to those deemed to have artistic or intellectual value. Its Latin root literatura/litteratura (derived itself from littera, letter or handwriting) was used to refer to all written accounts, but intertwined with the roman concept of cultura: learning or cultivation. Literature often uses language differently than ordinary language (see literariness). Literature can be classified according to whether it is fiction or non-fiction and whether it is poetry or prose; it can be further distinguished according to major forms such as the novel, short story or drama; and works are often categorised according to historical periods or their adherence to certain aesthetic features or expectations (genre).
Question: Besides historical genres, how are works often categorized? 

Output: unanswerable


Input: Read this: Along with professional services, media companies are concentrated in London and the media distribution industry is London's second most competitive sector. The BBC is a significant employer, while other broadcasters also have headquarters around the City. Many national newspapers are edited in London. London is a major retail centre and in 2010 had the highest non-food retail sales of any city in the world, with a total spend of around £64.2 billion. The Port of London is the second-largest in the United Kingdom, handling 45 million tonnes of cargo each year.
Question: What is the second largest port in the UK?

Output:
The Port of London