In Athens, Prime Minister Alexis Tsipras and his inner circle debated whether to take on anti-bailout rebels within his own radical left Syriza party by calling a parliamentary confidence vote or to go straight to early elections.
Refer to the input text as context and select the correct relationship between 'Syriza' and 'Alexis Tsipras' from the available options.
Options: position held, platform, chairperson, brand