"The splintering of the more vehemently 'anti-memorandum' faction of Syriza and the renewed electoral mandate for Prime Minister Alexis Tsipras reduces the immediate political uncertainty that had arisen with the decision to call snap elections," said the Fitch ratings agency, referring to the memorandum of understanding signed for the bailout.
Analyze the relationship between 'Syriza' and 'Alexis Tsipras' within the context of the input sentence.
Options: parent organization, chairperson, developer, distributed by