Generate a correct and concise answer for the question based on the words in the context.

Context : Karl Helge Hampus Hellekant, later Karl Svensson (born January 30, 1976 in Danderyd, Stockholm County) is a Swedish neo-Nazi who was sentenced to 11 years of prison for the murder of syndicalist union member Björn Söderberg on October 12, 1999. 
Question : Which crime led to the conviction of Hampus Hellekant?
murder

Context : ISO 22000 is a standard developed by the International Organization for Standardization dealing with food safety. 
Question : Who set the standards for ISO 22000?
International Organization for Standardization

Context : The Poisoned Chocolates Case (1929) is a detective novel by Anthony Berkeley set in 1920s London in which a group of armchair detectives, who have founded the ``Crimes Circle'', formulate theories on a recent murder case Scotland Yard has been unable to solve. 
Question : Which place does The Poisoned Chocolates Case exist in?

London