Utilize the input text as a context reference, choose the right relationship between 'Syriza' and 'Alexis Tsipras' from the options.
Options: legal form, stock exchange, founded by, chairperson

He views the forthcoming election as a positive because it would enable Alexis Tsipras to separate from the more radical elements of the Syriza party and be in a position to implement necessary reforms like work rule changes and pension modification.
chairperson