Presidents Jean-Claude Juncker of EC, Doland Tusk of the European Council, Jeroen Dijsselbloem of the Eurogroup and Mario Draghi of the ECB took part in the meeting, Efe news agency reported.
In the context of the input sentence, determine the relationship between 'Eurogroup' and 'Jean-Claude Juncker'.
Options: chairperson, product/material produced, headquarters location, stock exchange