The split appears complete between Greek Prime Minister Alexis Tsipras and close to a third of the 149 lawmakers from his radical left Syriza party who have expressed their opposition to the terms of a third bailout.
Take context from the input text and decide on the accurate relationship between 'Syriza' and 'Alexis Tsipras' from the options provided.
Options: operator, member of, chairperson, product/material produced