Question: On 5th August 2011 a "secret" letter to Italian government was written by Jean Claude Trichet and the Chairman of what?

full_context: Document 1: Pierre Moscovici: Pierre Moscovici (] ; born September 16, 1957) is a French politician currently serving as the European Commissioner for Economic and Financial Affairs, Taxation and Customs. Previously he served as a senior French politician, as Minister of Finance from 2012 to 2014 and as Minister for European Affairs between 1997 and 2002.
Document 2: Intesa Sanpaolo: Intesa Sanpaolo is a banking group resulting from the merger between Banca Intesa and Sanpaolo IMI based in Torre Intesa Sanpaolo, Turin, Italy. It has clear leadership in the Italian market and a minor but growing international presence focused on Central-Eastern Europe, the Middle East and North Africa (97% of the bank's revenue from Europe and 86% of all loans to customers come from business in Italy). When it was formed in 2007 it overtook Unicredit Group as the largest bank in Italy with 13 million customers and $690 billion worth of assets. By 2010 its assets had grown to $877.66 billion 26th highest among all of the world's companies. The company is a component of the Euro Stoxx 50 stock market index.
Document 3: Letter of ECB to Italy on 5th August 2011: On 5th August 2011, during dramatic crisis of European banks, the former governor of ECB, Jean Claude Trichet, together with Mario Draghi, wrote a "secret" letter to Italian government, at the time led by Silvio Berlusconi, in which they pushed for a series of economic measures "to be implemented as soon as possible". By complying of these measures, the support of ECB was implicitly conditioned by massive purchase of Italian bonds on the secondary market.
Document 4: Klaus Regling: Klaus P. Regling (born 3 October 1950 in Lübeck, West Germany) is a German economist and current Chief Executive Officer of the European Financial Stability Facility (EFSF) and Managing Director of the European Stability Mechanism. Regling was reportedly considered as a possible head of the European Central Bank to succeed Jean Claude Trichet.
Document 5: Marcos Rodriguez Ema: After graduating with honors from Georgetown University’s School of Foreign Service and completing his juris doctor degree at Georgetown University Law Center in Washington, D.C., Mr. Rodríguez-Ema returned to Puerto Rico to work as an associate in the corporate and banking division of a major law firm in San Juan. He concentrated and focused his early legal career on the legal aspects of complex financial transactions for the law firm’s banking clients. He was later recruited by Drexel Burnham Lambert-Puerto Rico as a Vice President, later Senior Vice President, of their Corporate and Municipal Finance division. He was responsible for structuring and executing a variety of bond and note issues for the Government of Puerto Rico, its several dependencies, as well as for Drexel’s private clients. In 1989 Mr. Rodríguez-Ema was recruited by Chase Manhattan Bank in Puerto Rico to manage the investment banking unit of its Chase Securities Puerto Rico subsidiary, thus becoming a member of Chase’s Management Committee in Puerto Rico. After the November 1992 election, the governor-elect of Puerto Rico asked him to join his fiscal and financial team as President of the Government Development Bank for Puerto Rico (GDB). The GDB (www.gdb-pur.com) is the bank and fiscal agent for the government of Puerto Rico. As such, it is chartered with the coordination, structure, execution and placement of every single financing, bond or note issue for all government agencies, government-owned corporations and its multiple dependencies, including all 78 municipalities throughout Puerto Rico.
Document 6: Mark Carney: Mark Joseph Carney, {'1': ", '2': ", '3': ", '4': "} (born March 16, 1965) is a Canadian economist who currently serves as Governor of the Bank of England and Chairman of the G20's Financial Stability Board.
Document 7: HypoVereinsbank: UniCredit Bank Aktiengesellschaft, better known under its brand name Hypovereinsbank (HVB), is the fifth-largest of the German financial institutions, ranked according to its total assets, and the fourth largest bank in Germany according to the number of its employees. Its registered office is in Munich and it is a member of the Cash Group. Since 2005, UniCredit Bank AG has been a subsidiary of UniCredit S.p.A., an Italian financial service provider with its registered office in Rome and its headquarters in Milan. When the transfer resolution was entered in the commercial register in 2008, the equities of the minority shareholders were transferred to the principal shareholder, UniCredit S.p.A. as part of a squeeze-out. HVB thus became a wholly subsidiary and has not been listed on the stock exchange since this time.
Document 8: Federal Reserve responses to the subprime crisis: The U.S. central banking system, the Federal Reserve, in partnership with central banks around the world, took several steps to address the subprime mortgage crisis. Federal Reserve Chairman Ben Bernanke stated in early 2008: "Broadly, the Federal Reserve’s response has followed two tracks: efforts to support market liquidity and functioning and the pursuit of our macroeconomic objectives through monetary policy. A 2011 study by the Government Accountability Office found that "on numerous occasions in 2008 and 2009, the Federal Reserve Board invoked emergency authority under the Federal Reserve Act of 1913 to authorize new broad-based programs and financial assistance to individual institutions to stabilize financial markets. Loans outstanding for the emergency programs peaked at more than $1 trillion in late 2008."
Document 9: Mario Draghi: Mario Draghi {'1': ", '2': ", '3': 'OMRI', '4': "} (] ; born 3 September 1947) is an Italian economist who has served as President of the European Central Bank since November 2011. He previously served as Chairman of the Financial Stability Board from 2009 to 2011 and Governor of the Bank of Italy from 2005 to 2011.
Document 10: European Central Bank: The European Central Bank (ECB; German: "Europäische Zentralbank (EZB)", French: "Banque centrale européenne (BCE)") is the central bank for the euro and administers monetary policy of the eurozone, which consists of 19 EU member states and is one of the largest currency areas in the world. It is one of the world's most important central banks and is one of the seven institutions of the European Union (EU) listed in the Treaty on European Union (TEU). The capital stock of the bank is owned by the central banks of all 28 EU member states. The Treaty of Amsterdam established the bank in 1998, and it is headquartered in Frankfurt, Germany. s of 2015 the President of the ECB is Mario Draghi, former governor of the Bank of Italy, former member of the World Bank, and former managing director of the Goldman Sachs international division (2002–2005). The bank primarily occupied the Eurotower prior to, and during, the construction of the new headquarters.
Document 11: Andrea Beltratti: Andrea Beltratti (born February 9, 1959, Turin, Italy) is professor at Bocconi University, director of the Executive Master in Finance - EMF at SDA Bocconi School of Management and Chairman of Eurizon Capital. He has been Chairman of the Management Board of Intesa Sanpaolo until May 2013.
Document 12: Luca Cordero di Montezemolo: Luca Cordero di Montezemolo (] ; born 31 August 1947) is an Italian businessman, former Chairman of Ferrari, and formerly Chairman of Fiat S.p.A. and President of Confindustria and FIEG. He comes from an aristocratic family from the region of Piedmont in Italy. He graduated with a degree in law from La Sapienza University in 1971. Afterward, he studied for a masters degree in international commercial law at Columbia University. He is one of the founders and former president of NTV, an Italian company which is Europe's first private open access operator of 300 km/h (186 mph) high-speed trains.
Document 13: Banco Ambrosiano: Banco Ambrosiano was an Italian bank that collapsed in 1982. At the centre of the bank's failure was its chairman, Roberto Calvi and his membership in the illegal Masonic Lodge Propaganda Due (aka P2). The Institute for the Works of Religion, commonly known as the Vatican Bank, was Banco Ambrosiano's main shareholder. The Vatican Bank was also accused of funneling covert United States funds to Solidarity and the Contras through Banco Ambrosiano.
Document 14: European debt crisis: The European debt crisis (often also referred to as the Eurozone crisis or the European sovereign debt crisis) is a multi-year debt crisis that has been taking place in the European Union since the end of 2009. Several eurozone member states (Greece, Portugal, Ireland, Spain and Cyprus) were unable to repay or refinance their government debt or to bail out over-indebted banks under their national supervision without the assistance of third parties like other Eurozone countries, the European Central Bank (ECB), or the International Monetary Fund (IMF).
Document 15: Operation Triton: Operation Triton is a border security operation conducted by Frontex, the European Union's border security agency. The operation, under Italian control, began on 1 November 2014 and involves voluntary contributions from 15 other European nations (both EU member states and non-members). Current voluntary contributors to Operation Triton are Croatia, Iceland, Finland, Norway, Sweden, Germany, the Netherlands, France, Spain, Ireland, Portugal, Austria, Switzerland, Romania, Poland, Lithuania and Malta. The operation was undertaken after Italy ended Operation Mare Nostrum, which had become too costly for a single country to fund; it was costing the Italian government €9 million per month for an operation that lasted 12 months. The Italian government had requested additional funds from the other EU member states but they did not offer the requested support.
ground_truth: the Financial Stability Board