In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.

[EX Q]: Once Upon a Time's first season received 'generally favorable' reviews from critics. Metacritic gave it a score of 66 out of 100 based on 26 reviews. The pilot episode was watched by 12.93 million viewers and achieved an adult 18 -- 49 rating / share of 4.0 / 10. The second season premiered on September 30, 2012, to an audience of 11.36 million viewers, while the third season began on September 29, 2013, opening to 8.52 million viewers. In May 2014, ABC renewed the show for its fourth season, premiering in September 2014 to an audience of 9.47 million viewers. The series was renewed for a fifth season in May 2015 and for a sixth season in March 2016. On May 11, 2017, ABC renewed the series for a 22-episode seventh season. In February 2018, it was announced the seventh season would serve as the final season of the series.
[EX A]: when does once apon a time come back on

[EX Q]: The Tower of London, officially Her Majesty's Royal Palace and Fortress of the Tower of London, is a historic castle located on the north bank of the River Thames in central London. It lies within the London Borough of Tower Hamlets, separated from the eastern edge of the square mile of the City of London by the open space known as Tower Hill. It was founded towards the end of 1066 as part of the Norman Conquest of England. The White Tower, which gives the entire castle its name, was built by William the Conqueror in 1078 and was a resented symbol of oppression, inflicted upon London by the new ruling elite. The castle was used as a prison from 1100 (Ranulf Flambard) until 1952 (Kray twins), although that was not its primary purpose. A grand palace early in its history, it served as a royal residence. As a whole, the Tower is a complex of several buildings set within two concentric rings of defensive walls and a moat. There were several phases of expansion, mainly under Kings Richard I, Henry III, and Edward I in the 12th and 13th centuries. The general layout established by the late 13th century remains despite later activity on the site.
[EX A]: what type of castle was the tower of london

[EX Q]: The broad narrative of Hitchhiker follows the misadventures of the last surviving man, Arthur Dent, following the demolition of the planet Earth by a Vogon constructor fleet to make way for a hyperspace bypass. Dent is rescued from Earth's destruction by Ford Prefect, a human-like alien writer for the eccentric, electronic travel guide The Hitchhiker's Guide to the Galaxy, by hitchhiking onto a passing Vogon spacecraft. Following his rescue, Dent explores the galaxy with Prefect and encounters Trillian, another human that had been taken from Earth prior to its destruction by the President of the Galaxy, the two-headed Zaphod Beeblebrox, and the depressed Marvin, the Paranoid Android. Certain narrative details were changed between the various adaptations.
[EX A]:
what is the ultimate hitchhiker's guide to the galaxy about