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:
The major settlements in the ceremonial county are concentrated on the Fylde coast (the Blackpool Urban Area), and a belt of towns running west-east along the M65: Preston, Blackburn, Accrington, Burnley, Nelson and Colne. South of Preston are the towns of Leyland and Chorley; the three formed part of the Central Lancashire New Town designated in 1970. The north of the county is predominantly rural and sparsely populated, except for the towns of Lancaster and Morecambe which form a large conurbation of almost 100,000 people. Lancashire is home to a significant Asian population, numbering over 70,000 and 6% of the county's population, and concentrated largely in the former cotton mill towns in the south east.

Ex Output:
Where are the major settlements in the ceremonial county located?


Ex Input:
In the early 21st century, the population of Paris began to increase slowly again, as more young people moved into the city. It reached 2.25 million in 2011. In March 2001, Bertrand Delanoë became the first socialist mayor of Paris. In 2007, in an effort to reduce car traffic in the city, he introduced the Vélib', a system which rents bicycles for the use of local residents and visitors. Bertrand Delanoë also transformed a section of the highway along the left bank of the Seine into an urban promenade and park, the Promenade des Berges de la Seine, which he inaugurated in June 2013.

Ex Output:

What was the population of Paris in 2011?