Given the task definition and input, reply with output. 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.

Passage: During the 14th century, the Mendoza family was prominent in Guadalajara. This family included Inigo Lopez de Mendoza, also known as Marques de Santillana , and Pedro Gonzalez de Mendoza , Great Cardinal of Spain and adviser of the Catholic Monarchs. The Mendoza family held the title of Dukes and Duchesses of El Infantado from 1475. In 1460, King Henry IV gave Guadalajara the title of 'City' and other privileges like the Cortes. Guadalajara was the birthplace of conquistador Nuno de Guzman, who commissioned in 1542 the foundation of Guadalajara, Mexico. During the War of the Spanish Succession, Guadalajara was sacked. King Philip V ordered the establishment of the Real Fabrica de Panos which was situated in the Alcazar till the early 19th century. In this period, the Mendoza Family ordered the building of El Palacio del Infantado as their main residence. It was completed in the early 1480s and it is considered by many the oldest surviving building built in a pure Renaissance style outside Italy.
Question: How many years was it from the time that Guadalajara was given the title city to when it was commissioned?
Answer type: Number
82.