Question: British night air defences were in a poor state. Few anti-aircraft guns had fire-control systems, and the underpowered searchlights were usually ineffective against aircraft at altitudes above 12,000 ft (3,700 m). In July 1940, only 1,200 heavy and 549 light guns were deployed in the whole of Britain. Of the "heavies", some 200 were of the obsolescent 3 in (76 mm) type; the remainder were the effective 4.5 in (110 mm) and 3.7 in (94 mm) guns, with a theoretical "ceiling"' of over 30,000 ft (9,100 m) but a practical limit of 25,000 ft (7,600 m) because the predictor in use could not accept greater heights. The light guns, about half of which were of the excellent Bofors 40 mm, dealt with aircraft only up to 6,000 ft (1,800 m). Although the use of the guns improved civilian morale, with the knowledge the German bomber crews were facing the barrage, it is now believed that the anti-aircraft guns achieved little and in fact the falling shell fragments caused more British casualties on the ground.
Try to answer this question if possible: What is believed to have caused many civilian casualties from anti-aircraft guns?
Answer: falling shell fragments
Question: Arsenal finished in either first or second place in the league in eight of Wenger's first eleven seasons at the club, although on no occasion were they able to retain the title. As of July 2013, they were one of only five teams, the others being Manchester United, Blackburn Rovers, Chelsea, and Manchester City, to have won the Premier League since its formation in 1992. Arsenal had never progressed beyond the quarter-finals of the Champions League until 2005–06; in that season they became the first club from London in the competition's fifty-year history to reach the final, in which they were beaten 2–1 by Barcelona. In July 2006, they moved into the Emirates Stadium, after 93 years at Highbury.
Try to answer this question if possible: To what stadium did Arsenal FC move in 2006?
Answer: Emirates Stadium
Question: Arsenal Ladies are the women's football club affiliated to Arsenal. Founded in 1987, they turned semi-professional in 2002 and are managed by Clare Wheatley. Arsenal Ladies are the most successful team in English women's football. In the 2008–09 season, they won all three major English trophies – the FA Women's Premier League, FA Women's Cup and FA Women's Premier League Cup, and, as of 2009, were the only English side to have won the UEFA Women's Cup, having done so in the 2006–07 season as part of a unique quadruple. The men's and women's clubs are formally separate entities but have quite close ties; Arsenal Ladies are entitled to play once a season at the Emirates Stadium, though they usually play their home matches at Boreham Wood.
Try to answer this question if possible: By 2009 what competition has Arsenal Ladies been the only ladies team to have won?
Answer: UEFA Women's Cup
Question: Websites and online media companies in or near the city include All Media Guide, the Weather Underground, and Zattoo. Ann Arbor is the home to Internet2 and the Merit Network, a not-for-profit research and education computer network. Both are located in the South State Commons 2 building on South State Street, which once housed the Michigan Information Technology Center Foundation. The city is also home to the headquarters of Google's AdWords program—the company's primary revenue stream. The recent surge in companies operating in Ann Arbor has led to a decrease in its office and flex space vacancy rates. As of 31 December 2012, the total market vacancy rate for office and flex space is 11.80%, a 1.40% decrease in vacancy from one year previous, and the lowest overall vacancy level since 2003. The office vacancy rate decreased to 10.65% in 2012 from 12.08% in 2011, while the flex vacancy rate decreased slightly more, with a drop from 16.50% to 15.02%.
Try to answer this question if possible: What year was the flex vacancy rate at 16.05%?
Answer:
unanswerable