The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "extent" appeared
2020-11-04 : Q&A at UBS event2020-09-23 : Interview with Bloomberg
2017-04-08 : Remarks on the future of economic governance in Europe and the euro
2016-10-11 : Speaking points for an event organised by MNI Connect
2014-02-07 : Reviving growth in the euro area