input: The fleet left Lisbon on 6 April 1506. Afonso piloted his ship himself, having lost his appointed pilot on departure. In Mozambique Channel, they rescued Captain Joao da Nova, who had encountered difficulties on his return from India; da Nova and his ship, the Frol de la mar, joined da Cunha's fleet. From Malindi, da Cunha sent envoys to Ethiopia, which at the time was thought to be closer than it actually is. Those included the priest Joao Gomes, Joao Sanches and Tunisian Sid Mohammed who, having failed to cross the region, headed for Socotra; from there, Afonso managed to land them in Filuk. After successful attacks on Arab cities on the east Africa coast, they conquered Socotra and built a fortress at Suq, hoping to establish a base to stop the Red Sea commerce to the Indian Ocean. However, Socotra was abandoned four years later, as it was not advantageous as a base. At Socotra, they parted ways: Tristao da Cunha sailed for India, where he would relieve the Portuguese besieged at Cannanore, while Afonso took seven ships and 500 men to Ormuz in the Persian Gulf, one of the chief eastern centers of commerce. On his way, he conquered the cities of Curiati (Kuryat), Muscat in July 1507, and Khor Fakkan, accepting the submission of the cities of Kalhat and Sohar. He arrived at Ormuz on 25 September and soon captured the city, which agreed to become a tributary state of the Portuguese king. Hormuz was then a tributary state of Shah Ismail of Persia. In a famous episode, shortly after it's conquest Albuquerque was confronted by Persian envoys, who demanded the payment of the due tribute from him instead. He ordered them be given a stock of cannonballs, arrows and weapons, retorting that "such was the currency struck in Portugal to pay the tribute demanded from the dominions of King Manuel" According to Bras de Albuquerque, it was Shah Ismael who coined the term "Lion of the seas", addressing Albuquerque as such. Afonso began building the Fort of Our Lady of Victory (later renamed Fort of Our Lady of the Conception), engaging his men of all ranks in the work. However, some of his officers revolted against the heavy work and climate and, claiming that Afonso was exceeding his orders, departed for India. With the fleet reduced to two ships and left without supplies, he was unable to maintain this position for long. Forced to abandon Ormuz in January 1508, he raided coastal villages to resupply the settlement of Socotra, returned to Ormuz, and then headed to India.

Answer this question "Did he resign as captian?"
output: he raided coastal villages to resupply the settlement of Socotra, returned to Ormuz, and then headed to India.

Question: Robert James Fischer (March 9, 1943 - January 17, 2008) was an American chess grandmaster and the eleventh World Chess Champion. Many consider him to be the greatest chess player of all time. Bobby Fischer showed great skill in chess from an early age; at 13, he won a brilliancy known as "The Game of the Century". At age 14, he became the US Chess Champion, and at 15, he became both the youngest grandmaster up to that time and the youngest candidate for the World Championship.

Bobby Fischer was born at Michael Reese Hospital in Chicago, Illinois, on March 9, 1943. His birth certificate listed his father as Hans-Gerhardt Fischer, also known as Gerardo Liebscher, a German biophysicist. His mother, Regina Wender Fischer, was a US citizen, born in Switzerland; her parents were Polish Jews. Raised in St. Louis, Missouri, Regina became a teacher, registered nurse, and later a physician. After graduating from college in her teens, Regina traveled to Germany to visit her brother. It was there she met geneticist and future Nobel Prize winner Hermann Joseph Muller, who persuaded her to move to Moscow to study medicine. She enrolled at I.M. Sechenov First Moscow State Medical University, where she met Hans-Gerhardt, whom she married in November 1933. In 1938, Hans-Gerhardt and Regina had a daughter, Joan Fischer. The reemergence of anti-Semitism under Stalin prompted Regina to go with Joan to Paris, where Regina became an English teacher. The threat of a German invasion led her and Joan to go to the United States in 1939. Hans-Gerhardt attempted to follow the pair but, at that time, his German citizenship barred him from entering the United States. Regina and Hans-Gerhardt had separated in Moscow, although they did not officially divorce until 1945. At the time of her son's birth, Regina was "homeless" and shuttled to different jobs and schools around the country to support her family. She engaged in political activism, and raised both Bobby and Joan as a single parent. In 1949, the family moved to Brooklyn, New York City, where she studied for her master's degree in nursing and subsequently began working in that field.

Using a quote from the above article, answer the following question: Did he have any siblings?
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Answer:
Joan Fischer.