The webapp provides for each item the link on ECB's website.
Speeches for : Mario Draghi where "portfolio" appeared
2017-11-20 : Hearing of the Committee on Economic and Monetary Affairs of the European Parliament2016-02-15 : Hearing at the European Parliament's Economic and Monetary Affairs Committee
2015-11-03 : Reception for the Opening of the European Cultural Days
2015-03-11 : The ECB and its Watchers XVI Conference
2014-11-21 : Monetary policy in the euro area