The problem: Answer a question about this article:
Because of the global economic recession that began in 2007, the GDP of Estonia decreased by 1.4% in the 2nd quarter of 2008, over 3% in the 3rd quarter of 2008, and over 9% in the 4th quarter of 2008. The Estonian government made a supplementary negative budget, which was passed by Riigikogu. The revenue of the budget was decreased for 2008 by EEK 6.1 billion and the expenditure by EEK 3.2 billion. In 2010, the economic situation stabilized and started a growth based on strong exports. In the fourth quarter of 2010, Estonian industrial output increased by 23% compared to the year before. The country has been experiencing economic growth ever since.
What year did Estonia start their economic rise based on strong exports?
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The answer: 2010


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The "General Law of Linguistic Rights of the Indigenous Peoples" grants all indigenous languages spoken in Mexico, regardless of the number of speakers, the same validity as Spanish in all territories in which they are spoken, and indigenous peoples are entitled to request some public services and documents in their native languages. Along with Spanish, the law has granted them — more than 60 languages — the status of "national languages". The law includes all indigenous languages of the Americas regardless of origin; that is, it includes the indigenous languages of ethnic groups non-native to the territory. As such the National Commission for the Development of Indigenous Peoples recognizes the language of the Kickapoo, who immigrated from the United States, and recognizes the languages of the Guatemalan indigenous refugees. The Mexican government has promoted and established bilingual primary and secondary education in some indigenous rural communities. Nonetheless, of the indigenous peoples in Mexico, only about 67% of them (or 5.4% of the country's population) speak an indigenous language and about a sixth do not speak Spanish (1.2% of the country's population).
How many languages have been giving the status of "national languages"?
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The answer: more than 60


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Insects were the earliest organisms to produce and sense sounds. Insects make sounds mostly by mechanical action of appendages. In grasshoppers and crickets, this is achieved by stridulation. Cicadas make the loudest sounds among the insects by producing and amplifying sounds with special modifications to their body and musculature. The African cicada Brevisana brevis has been measured at 106.7 decibels at a distance of 50 cm (20 in). Some insects, such as the Helicoverpa zeamoths, hawk moths and Hedylid butterflies, can hear ultrasound and take evasive action when they sense that they have been detected by bats. Some moths produce ultrasonic clicks that were once thought to have a role in jamming bat echolocation. The ultrasonic clicks were subsequently found to be produced mostly by unpalatable moths to warn bats, just as warning colorations are used against predators that hunt by sight. Some otherwise palatable moths have evolved to mimic these calls. More recently, the claim that some moths can jam bat sonar has been revisited. Ultrasonic recording and high-speed infrared videography of bat-moth interactions suggest the palatable tiger moth really does defend against attacking big brown bats using ultrasonic clicks that jam bat sonar.
Insect sounds come from what kind of action?
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The answer: mechanical


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In 1821, Alexis Bouvard published astronomical tables of the orbit of Neptune's neighbour Uranus. Subsequent observations revealed substantial deviations from the tables, leading Bouvard to hypothesise that an unknown body was perturbing the orbit through gravitational interaction. In 1843, John Couch Adams began work on the orbit of Uranus using the data he had. Via Cambridge Observatory director James Challis, he requested extra data from Sir George Airy, the Astronomer Royal, who supplied it in February 1844. Adams continued to work in 1845–46 and produced several different estimates of a new planet.
What did the extra data John Couch Adams received produce? 
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The answer:
several different estimates of a new planet