The webapp provides for each item the link on ECB's website.
Speeches for : Yves Mersch where "gradually" appeared
2020-10-19 : The ECB’s monetary policy amid the pandemic2017-07-25 : The ECB’s monetary policy stance
2014-04-17 : Launching the ECB-coordinated technical cooperation with central banks of the Western Balkan
2014-01-13 : Unveiling the new €10 banknote
2013-03-25 : Opening of the “New Face of the Euro” exhibition