Refer to the input text as context and select the correct relationship between 'Syriza' and 'Alexis Tsipras' from the available options.
Options: employer, chairperson, distributed by, operator

Greece is set to receive the first instalment of its third multi-billion-euro bailout, as Prime Minister Alexis Tsipras mulls whether to hold early elections after the austerity bailout split his radical left Syriza party
chairperson