Input: Read this: Palmerston died in 1865, and after a brief ministry led by Russell, Derby returned to power. In 1866, Victoria attended the State Opening of Parliament for the first time since Albert's death. The following year she supported the passing of the Reform Act 1867 which doubled the electorate by extending the franchise to many urban working men, though she was not in favour of votes for women. Derby resigned in 1868, to be replaced by Benjamin Disraeli, who charmed Victoria. "Everyone likes flattery," he said, "and when you come to royalty you should lay it on with a trowel." With the phrase "we authors, Ma'am", he complimented her. Disraeli's ministry only lasted a matter of months, and at the end of the year his Liberal rival, William Ewart Gladstone, was appointed prime minister. Victoria found Gladstone's demeanour far less appealing; he spoke to her, she is thought to have complained, as though she were "a public meeting rather than a woman".
Question: Who died in 1856?

Output: unanswerable

Input: Read this: Temporal measurement has occupied scientists and technologists, and was a prime motivation in navigation and astronomy. Periodic events and periodic motion have long served as standards for units of time. Examples include the apparent motion of the sun across the sky, the phases of the moon, the swing of a pendulum, and the beat of a heart. Currently, the international unit of time, the second, is defined by measuring the electronic transition frequency of caesium atoms (see below). Time is also of significant social importance, having economic value ("time is money") as well as personal value, due to an awareness of the limited time in each day and in human life spans.
Question: How do you define the method used for tracking heartbeats?

Output: unanswerable

Input: Read this: Both languages are still largely mutually intelligible, although this relation can in some fields (such as lexicon, spelling and grammar) be asymmetric, as it is easier for Dutch speakers to understand written Afrikaans than it is for Afrikaans speakers to understand written Dutch. Afrikaans is grammatically far less complex than Dutch, and vocabulary items are generally altered in a clearly patterned manner, e.g. vogel becomes voel ("bird") and regen becomes reen ("rain"). In South Africa, the number of students following Dutch at university, is difficult to estimate, since the academic study of Afrikaans inevitably includes the study of Dutch. Elsewhere in the world, the number of people learning Dutch is relatively small.
Question: What's the Dutch word for "bird"?

Output: vogel

Input: Read this: From seasons four to seven and nine, the twenty-four semi-finalists were divided by gender in order to ensure an equal gender division in the top twelve. The men and women sang separately on consecutive nights, and the bottom two in each groups were eliminated each week until only six of each remained to form the top twelve.
Question: How many women were semi-finalists on season six of American Idol?

Output:
twelve