You will be given a definition of a task first, then some input of the task.
This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.

Passage: In this last connection, the name could suggest the derogatory inference of superstitious worship; popular fancy held that Huguon, the gate of King Hugo, was haunted by the ghost of le roi Huguet (regarded by Roman Catholics as an infamous scoundrel) and other spirits, who instead of being in Purgatory came back to harm the living at night. It was in this place in Tours that the pretendus reformes ("these supposedly 'reformed'") habitually gathered at night, both for political purposes, and for prayer and singing psalms. Such explanations have been traced to the contemporary, Reguier de la Plancha (d. 1560), who in De l'Estat de France offered the following account as to the origin of the name, as cited by The Cape Monthly:
Output:
In what year was Huguon built?