[PAR] [TLE] Great Smog of London [SEP] The Great Smog of London, or Great Smog of 1952 sometimes called the Big Smoke, was a severe air-pollution event that affected the British capital of London in December 1952.  A period of cold weather, combined with an anticyclone and windless conditions, collected airborne pollutants – mostly arising from the use of coal – to form a thick layer of smog over the city.  It lasted from Friday, 5 December to Tuesday, 9 December 1952 and then dispersed quickly when the weather changed. [PAR] [TLE] Clean Air Act 1956 [SEP] The Clean Air Act 1956 was an Act of the Parliament of the United Kingdom passed in response to London's Great Smog of 1952.  It was in effect until 1964, and sponsored by the Ministry of Housing and Local Government in England and the Department of Health for Scotland.
[PAR] [TLE] Great Smog of London [ SEP ] The Great Smog of London , or Great Smog of 1952 sometimes called the Big Smoke , was a severe air - pollution event that affected the British capital of London in December 1952 . A period of cold weather , combined with an anticyclone and windless conditions , collected airborne pollutants – mostly arising from the use of coal – to form a thick layer of smog over the city . It lasted from Friday , 5 December to Tuesday , 9 December 1952 and then dispersed quickly when the weather changed . [PAR] [TLE] Clean Air Act 1956 [ SEP ] The Clean Air Act 1956 was an Act of the Parliament of the United Kingdom passed in response to London 's Great Smog of 1952 . It was in effect until 1964 , and sponsored by the Ministry of Housing and Local Government in England and the Department of Health for Scotland .
In what month of 1956 was the event that caused The Clean Air Act as a response?
In what month of 1956 was the event that caused The Clean Air Act as a response ?
December
December