This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
Q: Passage: John, the eldest son of King Manuel I to his second wife Maria of Aragon, was born in Lisbon on 7 June 1502. The event was marked by the presentation of Gil Vicente's Visitation Play or the Monologue of the Cowherd in the queen's chamber. The young prince was sworn heir to the throne in 1503, the year his youngest sister, Isabella of Portugal, Empress Consort of the Holy Roman Empire between 1527 and 1538, was born. John was educated by notable scholars of the time, including the astrologer Tomas de Torres, Diogo de Ortiz, Bishop of Viseu, and Luis Teixeira Lobo, one of the first Portuguese Renaissance humanists, rector of the University of Siena and Professor of Law at Ferrara . John's chronicler Antonio de Castilho said that, "Dom Joao III faced problems easily, complementing his lack of culture with a practice formation that he always showed during his reign" . In 1514, he was given his own house, and a few years later began to help his father in administrative duties. At the age of sixteen, John was chosen to marry his first cousin, the 20-year-old Eleanor of Austria, eldest daughter of Philip the Handsome of Austria-Burgundy and Queen Joanna of Castile, but instead she married his widowed father Manuel. John took deep offence at this: his chroniclers say he became melancholic and was never quite the same. Some historians also claim this was one of the main reasons that John later became fervently religious, giving him name the Pious .
Question: How many years old was John when he was given his own house?
Answer type: Number
A:
12.