The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "lesson" appeared
2017-10-18 : Structural reforms in the euro area2016-11-30 : Interview with El PaĆs
2016-11-28 : Hearing of the Committee on Economic and Monetary Affairs of the European Parliament
2014-11-20 : Stronger together in Europe: the contribution of banking supervision
2013-09-12 : Euro Conference - Latvia