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.
Refer to the input text as context and select the correct relationship between 'Eurogroup' and 'Jeroen Dijsselbloem' from the available options.
Options: distribution format, chairperson, founded by, location of formation