Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The earthquake was the worst to strike the Sichuan area in over 30 years. Following the quake, experts and the general public sought information on whether or not the earthquake could have been predicted in advance, and whether or not studying statistics related to the quake could result in better prediction of earthquakes in the future. Earthquake prediction is not yet established science; there was no consensus within the scientific community that earthquake "prediction" is possible.
How long had it been since an earthquake of similar magnitude?
A: over 30 years

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
A further example is the goby fish, which sometimes lives together with a shrimp. The shrimp digs and cleans up a burrow in the sand in which both the shrimp and the goby fish live. The shrimp is almost blind, leaving it vulnerable to predators when outside its burrow. In case of danger the goby fish touches the shrimp with its tail to warn it. When that happens both the shrimp and goby fish quickly retreat into the burrow. Different species of gobies (Elacatinus spp.) also exhibit mutualistic behavior through cleaning up ectoparasites in other fish.
What behavior does the shrimp exhibit when it does not live with the goby?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
During the middle decades of the 18th century, there were several outbreaks of military conflict on the Indian subcontinent, the Carnatic Wars, as the English East India Company (the Company) and its French counterpart, the Compagnie francaise des Indes orientales, struggled alongside local rulers to fill the vacuum that had been left by the decline of the Mughal Empire. The Battle of Plassey in 1757, in which the British, led by Robert Clive, defeated the Nawab of Bengal and his French allies, left the Company in control of Bengal and as the major military and political power in India. France was left control of its enclaves but with military restrictions and an obligation to support British client states, ending French hopes of controlling India. In the following decades the Company gradually increased the size of the territories under its control, either ruling directly or via local rulers under the threat of force from the British Indian Army, the vast majority of which was composed of Indian sepoys.
When was the Battle of Plassey?
A: 1757

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Chopin arrived in Paris in late September 1831; he would never return to Poland, thus becoming one of many expatriates of the Polish Great Emigration. In France he used the French versions of his given names, and after receiving French citizenship in 1835, he travelled on a French passport. However, Chopin remained close to his fellow Poles in exile as friends and confidants and he never felt fully comfortable speaking French. Chopin's biographer Adam Zamoyski writes that he never considered himself to be French, despite his father's French origins, and always saw himself as a Pole.
In what year did Chopin become a French citizen?
A:
1835