Refer to the input text as context and select the correct relationship between 'Syriza' and 'ATHENS' from the available options.
Options: headquarters location, distributed by, founded by, currency

ATHENS (Reuters) - Greek Prime Minister Alexis Tsipras contained a rebellion in his left-wing Syriza party to win parliamentary approval on Thursday for a second package of reforms required to start talks on a financial rescue deal.
headquarters location