This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Ex Input:
With the union of the crowns of Castille and Aragon (1479), the use of Spanish gradually became more prestigious. Starting in the 16th century, Catalan literature experienced a decline, the language came under the influence of Spanish, and the urban and literary classes became bilingual.

Ex Output:
When were Castille and Aragon united?

Ex Input:
Chopin has figured extensively in Polish literature, both in serious critical studies of his life and music and in fictional treatments. The earliest manifestation was probably an 1830 sonnet on Chopin by Leon Ulrich. French writers on Chopin (apart from Sand) have included Marcel Proust and Andre Gide; and he has also featured in works of Gottfried Benn and Boris Pasternak. There are numerous biographies of Chopin in English (see bibliography for some of these).

Ex Output:
An 1830 sonnet was written about Chopin by what man?

Ex Input:
The Suez Canal, built in partnership with the French, was completed in 1869. Its construction led to enormous debt to European banks, and caused popular discontent because of the onerous taxation it required. In 1875 Ismail was forced to sell Egypt's share in the canal to the British Government. Within three years this led to the imposition of British and French controllers who sat in the Egyptian cabinet, and, "with the financial power of the bondholders behind them, were the real power in the Government."

Ex Output:
When was Suez canal completed?