The Athens General Index has fluctuated sharply this year, which has seen left-wing Prime Minister Alexis Tsipras's newly elected Syriza government wrangle with European Union and International Monetary Fund lenders in bitter bailout talks.
Utilize the input text as a context reference, choose the right relationship between 'Syriza' and 'Athens' from the options.
Options: product/material produced, headquarters location, owned by, developer