Question: Which sculpture, located at Placa del Rei, was created by the Basque artist notable for his abstract works?

Context paragraphs:
Eduardo Chillida: Eduardo Chillida Juantegui, or Eduardo Txillida Juantegi in Basque, (10 January 1924 – 19 August 2002) was a Spanish Basque sculptor notable for his monumental abstract works.

Ana Laura Aláez: Ana Laura Aláez (Bilbao, 1964) is a Basque artist.  She is one of the most renowned contemporary artists in Spain.  She defines herself as an "emotions architect", as she transforms all her life into art, depicting her feelings in her artworks.  One of her first exhibitions took place in 1992, in Fundació Joan Miró's Espai 10, in Barcelona.  Alberto Peral, another Basque artist, was also featured in this exhibition.

Mira Lehr: Mira Lehr is an American multimedia artist.  She creates abstract works inspired by the natural world.  Her practice encompasses painting, design, sculpture, and video installation.

Woman VI: In 1953, Woman, a series of abstract works of art painted by Willem de Kooning, shocked the public who visited de Kooning’s third one-man show at the Sidney Janis Gallery in Manhattan.  The last painting of this series, "Woman VI", is displayed at the Carnegie Museum of Art as part of the Postwar Abstraction collection since the 1955 Carnegie International Exhibition.  Willem de Kooning is a pioneer of abstract expressionism in America.  This painting is a good example of contemporary art’s transition from European traditional painting to abstract expressionism; "Woman" is considered de Kooning’s most famous series because it is significant to postwar history and social events, such as the American Feminist Movement in 1960s; de Kooning has a ventured impact on the issue of the representation of woman during 1950s through the abstract form; and, above all, Woman VI is an irreplaceable work of art for the Postwar Abstraction collection not only for its abstract form and brushwork techniques but because it still has the ability to create multiple interpretations with each viewing.

Alberto Peral: Alberto Peral (born 1966, Santurtzi, Biscay) is a Basque artist.  He began to highlight in the principle of the 90s.  Since his first individual exhibition at the Fundació Joan Miró in Barcelona in 1992, he has created a conceptual route that has brought him to move through a big diversity of mediums, like drawing, photography or sculpture.

Topos V: Topos V, or simply Topos, is a sculpture by the Basque artist Eduardo Chillida, standing at Plaça del Rei in the Gothic Quarter of Barcelona.

Esperanza Zabala: Esperanza Zabala (Eibar, Gipuzkoa, 1974), is a Spanish Basque artist.  She works on painting, sculpture, graphic design and installations.

Isaac Witkin: Isaac Witkin, internationally renowned modern sculptor, was born in Johannesburg, South Africa on 10 May 1936, and he died 23 April 2006.  Witkin entered Saint Martin's School of Art in London in 1957.  Studying under Sir Anthony Caro and alongside other luminaries in training such as Phillip King, William G. Tucker, David Annesley and Michael Bolus, Witkin learned and helped create a new style of sculpture that led to their being called the New Generation of sculptors when their innovating abstract forms of modern sculpture reached and changed the art world.  Witkin's work, abstract works of usually brightly colored fiberglass or wood, in particular was noted for its "witty, Pop-Art look".

Oque d'El Rey: Clube Desportivo de Oque del Rei (then as Desportivo de Oque d'El Rey) is a football club that is based in the village of Oque d'El Rei in São Tomé and Príncipe.  The team plays in the São Tomé and Principe Championship, the team was playing in the top local division that started in 2009 up to 2014, it now plays in the second local division as of the 2015 season.

Susan Rankaitis: Susan Rankaitis (born 1949) is an American multimedia artist working primarily in painting, photography, and drawing.  Rankaitis began her career in the 1970s as an abstract painter.  Visiting the Art Institute of Chicago while in graduate school, she had a transformative encounter with the photograms of artist László Moholy-Nagy (1895–1946), whose abstract works of the 1920s and 1940s she saw as "both painting and photography."  Rankaitis began to develop her own experimental methods for producing abstract and conceptual artworks related both to painting and photography.

Supporting paragraphs: Topos V Eduardo Chillida
Answer: Topos V