The webapp provides for each item the link on ECB's website.
Speeches for : Jean-Claude Trichet where "demonstrate" appeared
2011-01-23 : Interview with The Wall Street Journal2010-05-20 : The great financial crisis: Lessons for financial stability and monetary policy
2009-02-16 : Interview with China Finance
2006-11-10 : Closing address at the Fourth ECB Central Banking Conference on The role of Money and Monetary Policy in the Twenty-first Century