What is the relationship between 'Eurogroup' and 'Jeroen Dijsselbloem' in the context of the input sentence.
Options: chairperson, distribution format, location of formation, founded by

Eurogroup president Jeroen Dijsselbloem - who represents all 19 finance ministers - questioned whether Mr Tsipras could implement measures which he had attacked as "blackmail" and “humiliation” only seven days ago.
chairperson