instruction:
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.
question:
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.
answer:
What period was 2.5 million years ago?


question:
As early as 1934, Popper wrote of the search for truth as "one of the strongest motives for scientific discovery." Still, he describes in Objective Knowledge (1972) early concerns about the much-criticised notion of truth as correspondence. Then came the semantic theory of truth formulated by the logician Alfred Tarski and published in 1933. Popper writes of learning in 1935 of the consequences of Tarski's theory, to his intense joy. The theory met critical objections to truth as correspondence and thereby rehabilitated it. The theory also seemed, in Popper's eyes, to support metaphysical realism and the regulative idea of a search for truth.
answer:
Whose theory of truth did Popper read with intense interest in 1935?


question:
Hospital Vilardebó is the only psychiatric hospital in Montevideo. Named after the physician and naturalist Teodoro Vilardebó Matuliche, it opened 21 May 1880. The hospital was originally one of the best of Latin America and in 1915 grew to 1,500 inpatients. Today the hospital is very deteriorated, with broken walls and floors, lack of medicines, beds, and rooms for the personnel. It has an emergency service, outpatient, clinic and inpatient rooms and employs approximately 610 staff, psychologists, psychiatrists, social workers, administrators, guards, among others. The average patient age is 30 years; more than half of the patients arrive by court order; 42% suffer from schizophrenia, 18% from depression and mania, and there are also a high percentage of drug addicted patients.
answer:
What is the only psychiatric hospital in Montevideo?