What is the relationship between Syriza and ATHENS in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

ATHENS (Reuters) - Some members of Greece's leftist government wanted to raid central bank reserves and hack taxpayer accounts to prepare a return to the drachma, according to reports on Sunday that highlighted the chaos in the ruling Syriza party.

Answer: headquarters_location