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:
Around 2.5 million years ago (ending 11,600 years ago) was the geological period of the Ice Ages. Since approximately 600,000 years ago, six major Ice Ages have occurred, in which sea level dropped 120 m (390 ft) and much of the continental margins became exposed. In the Early Pleistocene, the Rhine followed a course to the northwest, through the present North Sea. During the so-called Anglian glaciation (~450,000 yr BP, marine oxygen isotope stage 12), the northern part of the present North Sea was blocked by the ice and a large lake developed, that overflowed through the English Channel. This caused the Rhine's course to be diverted through the English Channel. Since then, during glacial times, the river mouth was located offshore of Brest, France and rivers, like the Thames and the Seine, became tributaries to the Rhine. During interglacials, when sea level rose to approximately the present level, the Rhine built deltas, in what is now the Netherlands.

Ex Output:
What period was 2.5 million years ago?


Ex Input:
Classical India refers to the period when much of the Indian subcontinent was reunited under the Gupta Empire (c. 320–550 CE). This period has been called the Golden Age of India and was marked by extensive achievements in science, technology, engineering, art, dialectic, literature, logic, mathematics, astronomy, religion, and philosophy that crystallized the elements of what is generally known as Hindu culture. The Hindu-Arabic numerals, a positional numeral system, originated in India and was later transmitted to the West through the Arabs. Early Hindu numerals had only nine symbols, until 600 to 800 CE, when a symbol for zero was developed for the numeral system. The peace and prosperity created under leadership of Guptas enabled the pursuit of scientific and artistic endeavors in India.

Ex Output:
By what is India under the Gupta Empire referered?


Ex Input:
In 1965, the corporate entity, American Broadcasting-Paramount Theatres, was renamed as the American Broadcasting Companies,  while its cinema division became ABC Theatres;[citation needed] its recording division was renamed ABC Records in 1966. In December of that year, the ABC television network premiered The Dating Game, a pioneer series in its genre, which was a reworking of the blind date concept in which a suitor selected one of three contestants sight unseen based on the answers to selected questions. This was followed up in July 1966 by The Newlywed Game, featuring three recently married couples who guessed the responses to their partner's questions (some of which were fairly risque). As ABC began to outgrow its facilities at 7 West 66th Street, Goldenson found a new headquarters for ABC in a 44 story building located at 1330 Avenue of the Americas in Manhattan, at the corner of 54th Street (now occupied by The Financial Times's New York office). This operation allowed for the conversion of the premises at 66th Street into production facilities for television and radio programs.

Ex Output:
What was the corporate entity American Broadcasting-Paramount Theatres renamed in 1965?