Input: Read this: Because of the great diversity found in animals, it is more economical for scientists to study a small number of chosen species so that connections can be drawn from their work and conclusions extrapolated about how animals function in general. Because they are easy to keep and breed, the fruit fly Drosophila melanogaster and the nematode Caenorhabditis elegans have long been the most intensively studied metazoan model organisms, and were among the first life-forms to be genetically sequenced. This was facilitated by the severely reduced state of their genomes, but as many genes, introns, and linkages lost, these ecdysozoans can teach us little about the origins of animals in general. The extent of this type of evolution within the superphylum will be revealed by the crustacean, annelid, and molluscan genome projects currently in progress. Analysis of the starlet sea anemone genome has emphasised the importance of sponges, placozoans, and choanoflagellates, also being sequenced, in explaining the arrival of 1500 ancestral genes unique to the Eumetazoa.
Question: Why is it more economical for scientists to study a small number of species?

Output: the great diversity found in animals

Input: Read this: In July 1963 the Mongolian People's Republic asked to join the Warsaw Pact under Article 9 of the treaty. For this purpose a special protocol should have been taken since the text of the treaty applied only to Europe. Due to the emerging Sino-Soviet split, Mongolia remained on observer status. Soviet stationing troops were agreed to stay in Mongolia from 1966.
Question: Whose troops agrees to stay in Mongolia from 1956?

Output: unanswerable

Input: Read this: In February 2010 Shell and Cosan formed a 50:50 joint-venture, Raizen, comprising all of Cosan's Brazilian ethanol, energy generation, fuel distribution and sugar activities, and all of Shell's Brazilian retail fuel and aviation distribution businesses. In March 2010, Shell announced the sale of some of its assets, including its liquid petroleum gas (LPG) business, to meet the cost of a planned $28bn capital spending programme. Shell invited buyers to submit indicative bids, due by 22 March, with a plan to raise $23bn from the sale. In June 2010, Royal Dutch Shell agreed to acquire all the business of East Resources for a cash consideration of $4.7 billion. The transaction included East Resources' tight gas fields.
Question: How much were the East Resources' gas fields worth?

Output: unanswerable

Input: Read this: One senator represents the island in the French Senate. The first election was held on 21 September 2008 with the last election in September 2014. St. Barthelemy became an overseas territory of the European Union on 1 January 2012, but the island's inhabitants remain French citizens with EU status holding EU passports. France is responsible for the defence of the island and as such has stationed a security force on the island comprising six policemen and thirteen gendarmes (posted on two-year term).
Question: How many senators represent St. Barts in France?

Output:
One