user: Who is Carlos Andres Perez?

assistant: Carlos Andrés Pérez Rodríguez (27 October 1922 – 25 December 2010) also known as CAP and often referred to as El Gocho (due to his Andean origins), was a Venezuelan politician and the president of Venezuela from 12 March 1974 to 12 March 1979 and again from 2 February 1989 to 21 May 1993. He was one of the founders of Acción Democrática, the dominant political party in Venezuela during the second half of the twentieth century.

His first presidency was known as the Saudi Venezuela due to its economic and social prosperity thanks to enormous income from petroleum exportation. However, his second presidency saw a continuation of the economic crisis of the 1980s, a series of social crises, widespread riots known as Caracazo and two coup attempts in 1992. In May 1993 he became the first Venezuelan president to be forced out of office by the Supreme Court on charges for the embezzlement of 250 million bolívars (roughly 2.7 million US dollars) belonging to a presidential discretionary fund, whose money was used to support the electoral process in Nicaragua and hire bodyguards for President Violeta Chamorro.

user: What are rare-earth materials

assistant: Although originally thought to be rare, many of the minerals are actually common in the Earth's crust. However, due to the difficulties in extracting the metal from the ore, rare is a fitting term.

user: Give me a title of one of the "Harry Potter" novels.

assistant: Harry Potter and the Goblet of Fire