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The machine was stolen six months ago from a museum that is north of London where Britain ' s wartime code breakers had their headquarters .
 London, Britain, Britain ' s wartime code breakers, their, a museum that is north of London where Britain ' s wartime code breakers had their headquarters ., that, where, their headquarters
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 London, Britain, Britain ' s wartime code breakers, their, a museum that is north of London where Britain ' s wartime code breakers had their headquarters ., that, where, their headquarters