Problem: Armando Anthony "Chick" Corea (born June 12, 1941) is an American jazz pianist/electric keyboardist and composer. His compositions "Spain", "500 Miles High", "La Fiesta" and "Windows", are considered jazz standards. As a member of Miles Davis's band in the late 1960s, he participated in the birth of jazz fusion. In the 1970s he formed the fusion band Return to Forever.

In the 1970s Corea started working with vibraphonist Gary Burton, with whom he recorded several duet albums for ECM, including 1972's Crystal Silence. They reunited in 2006 for a concert tour. A new record called The New Crystal Silence was issued in 2008 and won a Grammy Award in 2009. The package includes a disc of duets and another disc with the Sydney Symphony Orchestra.  Toward the end of the 1970s, Corea embarked on a series of concerts and two albums with Hancock. These concerts were presented in elegant settings with both pianists dressed formally and performing on Yamaha concert grand pianos. The two traded playing each other's compositions, as well as pieces by other composers such as Bela Bartok. In 1982, Corea performed The Meeting, a live duet with the classical pianist Friedrich Gulda.  In December 2007 Corea recorded a duet album, The Enchantment, with banjoist Bela Fleck. Fleck and Corea toured extensively for the album in 2007. Fleck was nominated in the Best Instrumental Composition category at the 49th Grammy Awards for the track "Spectacle".  In 2008 Corea collaborated with Japanese pianist Hiromi Uehara on the live album Duet (Chick Corea and Hiromi). The duo played a concert at Tokyo's Budokan arena on April 30.  In 2015 Corea reprised the duet concert series with Hancock, again sticking to a dueling-piano format, though both also had synthesizers at their station. The first concert in this series was played at the Paramount Theatre in Seattle, and featured improvised music along with iconic songs from each of the duo and standards from other composers.

What songs did they play together?

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Problem: Rockefeller was born in New York City, New York. He grew up in an eight-story house at 10 West 54th Street, the tallest private residence ever built in the city. Rockefeller was the youngest of six children born to financier John Davison Rockefeller Jr. and socialite Abigail Greene "Abby" Aldrich. John Jr. was the only son of Standard Oil co-founder John Davison Rockefeller Sr. and schoolteacher Laura Celestia "Cettie" Spelman.

In 1964, along with other American business figures such as Sol Linowitz, Rockefeller founded the non-profit International Executive Service Corps which encourages developing nations to promote private enterprise. In 1979, he formed the Partnership for New York City, a not-for-profit membership organization of New York businessmen. In 1992, he was selected as a leading member of the Russian-American Bankers Forum, an advisory group set up by the head of the Federal Reserve Bank of New York to advise Russia on the modernization of its banking system, with the full endorsement of President Boris Yeltsin.  Rockefeller had a lifelong association with the Council on Foreign Relations (CFR) when he joined as a director in 1949. In 1965, Rockefeller and other businessmen formed the Council of the Americas to stimulate and support economic integration in the Americas. In 1992, at a Council sponsored forum, Rockefeller proposed a "Western Hemisphere free trade area", which became the Free Trade Area of the Americas in a Miami summit in 1994. His and the Council's chief liaison to President Bill Clinton in order to garner support for this initiative was through Clinton's chief of staff, Mack McLarty, whose consultancy firm Kissinger McLarty Associates is a corporate member of the Council, while McLarty himself is on the board of directors. He was also a trustee of the Carnegie Endowment for International Peace, including 1948, when Alger Hiss was president.  Displeased with the refusal of Bilderberg Group meetings to include Japan, Rockefeller helped found the Trilateral Commission in July 1973.

Which policy group was considered the most important?

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Rockefeller had a lifelong association with the Council on Foreign Relations (CFR) when he joined as a director in 1949.