Question: Who is the sibling of the developer of The Song of Love?

full_context: Document 1: Gare Montparnasse (The Melancholy of Departure): Gare Montparnasse (The Melancholy of Departure) (Italian: "La stazione di Montparnasse)" (1914) is a painting by the Italian metaphysical painter Giorgio de Chirico. Many of de Chirico’s works were inspired by the introspective feelings evoked by travel. He was born in Greece to Italian parents. This work was painted during a period when he lived in Paris.
Document 2: Alberto Savinio: Alberto Savinio , real name Andrea Francesco Alberto de Chirico (25 August 1891 – 5 May 1952) was an Italian writer, painter, musician, journalist, essayist, playwright, set designer and composer. He was the younger brother of 'metaphysical' painter Giorgio de Chirico. His work often dealt with philosophical and psychological themes, and he also was heavily concerned with the philosophy of art.
Document 3: Giuseppe Alberti: Giuseppe Alberti (3 October 1664 – 3 February 1716) was an Italian painter of the Baroque period. He was born at Cavalese, in what was then Austrian Tyrol. After having studied medicine at Padua he decided to become a painter and architect. He worked under Pietro Liberi in Venice, then in Rome, and finally settled at Trieste. Alberti died at Cavalese.
Document 4: Metaphysical Interior with Large Factory: Metaphysical Interior with Large Factory (1916–17) is a painting by the Italian metaphysical painter Giorgio de Chirico. It is part of a series that extended late into de Chirico’s career.
Document 5: Giuseppe Matteo Alberti: Giuseppe Matteo Alberti (or Giuseppi) (20 September 1685, in Bologna, Italy – 18 February 1751, in Bologna, Italy) was an Italian Baroque composer and violinist.
Document 6: Fernando Savater: Born in San Sebastián, he was an Ethics professor at the University of the Basque Country for over a decade. Presently he is a Philosophy professor at the Complutense University of Madrid. He has won several accolades for his literary work, which covers issues as diverse as contemporary ethics, politics, cinema and literary studies. In 1990, Savater and columnist and publisher, Javier Pradera, founded the magazine, "Claves de Razón Práctica".
Document 7: The Song of Love: The Song of Love (also known as Le chant d'amour or Love Song; 1914) is a painting by the Italian metaphysical painter Giorgio de Chirico. It is one of the most famous works by de Chirico and an early example of the surrealist style, though it was painted ten years before the movement was "founded" by André Breton in 1924.
Document 8: The Disquieting Muses: The Disquieting Muses (in , 1916, 1917 or 1918) is a painting by the Italian metaphysical painter Giorgio de Chirico.
Document 9: Giulio Turcato: Giulio Turcato (16 March 1912 in Mantua – 22 January 1995 in Rome) was an Italian artist, belonging to both figurative and abstract expressionist currents.
Document 10: The Melancholy of Departure: The Melancholy of Departure (1916) is a painting by the Greek-Italian metaphysical painter Giorgio de Chirico. This painting was created after de Chirico returned to Italy from Paris to join the Italian Army in World War I.
Document 11: Alberto Jori: Born in Mantua, on his father's side he is the descendant of an old noble Swiss family of barons (Freiherren) from Ticino and patricians from Zurich. On his mother's side he is related to a long Jewish line of Mantuan rabbis, from which the kabbalists Moses ben Mordecai Zacuto (also known as the Ramaz), Solomon Aviad Sar Shalom Basilea and the mathematician Gino Fano were also members. He studied in Padua, Cambridge and Heidelberg and received a grant from the Alexander von Humboldt Foundation. In 2003, with his book on Aristotle, he won the prize of the International Academy of the History of Science (Paris, Sorbonne). He is Professor of Philosophy at the University of Tübingen, Germany, and is an exponent of the School of "Practical Philosophy".
Document 12: Girolamo Savoldo: Girolamo Savoldo, also called Girolamo da Brescia (c. 1480-1485 – after 1548) was an Italian High Renaissance painter active mostly in Venice, although he also worked in other cities in northern Italy. He is noted for his subtle use of color and chiaroscuro, and the sober realism of his works, which are mostly religious subjects, with a few portraits, which are given interest by their accessories or settings, "some even look like extracts from larger narratives".
Document 13: The Engineer's Lover: The Engineer's Lover (Italian: "'L'amante dell'ingegnere") is a painting by Italian painter Carlo Carrà. It was finished during the metaphysical phase of the artist (1921).
Document 14: The Double Dream of Spring: The Double Dream of Spring (also known as Doppio Sogno di Primavera, 1915) is a painting by the Italian metaphysical painter Giorgio de Chirico.
Document 15: Je t'aime No. IV: Je t'aime No. IV is a part of Robert Motherwell’s "Je t'aime" series, dating from 1955-1957. The medium for the painting is oil and charcoal on canvas, and the dimensions are 70 1/8 inches by 100 inches. It is an example of Abstract Expressionism, which is a style originated in the 1940s and 1950s in New York in which the artist expresses themselves through unidentifiable forms and through spontaneous acts of creating art.
ground_truth: Alberto Savinio
sub_queries: Who developed The Song of Love? Answer: Giorgio de Chirico
Giorgio de Chirico >> sibling Answer: Alberto Savinio