Input: Read this: Beyonce has worked with Pepsi since 2002, and in 2004 appeared in a Gladiator-themed commercial with Britney Spears, Pink, and Enrique Iglesias. In 2012, Beyonce signed a $50 million deal to endorse Pepsi. The Center for Science in the Public Interest (CSPINET) wrote Beyonce an open letter asking her to reconsider the deal because of the unhealthiness of the product and to donate the proceeds to a medical organisation. Nevertheless, NetBase found that Beyonce's campaign was the most talked about endorsement in April 2013, with a 70 per cent positive audience response to the commercial and print ads.
Question: Which soda company has Beyonce partnered with since 2002?

Output: Pepsi

Input: Read this: The National Historical Publications and Records Commission (NHPRC)the agency's grant-making armawards funds to state and local governments, public and private archives, colleges and universities, and other nonprofit organizations to preserve and publish historical records. Since 1964, the NHPRC has awarded some 4,500 grants.
Question: What do many nonprofit organizations take part in to support students?

Output: unanswerable

Input: Read this: The term "Late Middle Ages" refers to one of the three periods of the Middle Ages, along with the Early Middle Ages and the High Middle Ages. Leonardo Bruni was the first historian to use tripartite periodization in his History of the Florentine People (1442). Flavio Biondo used a similar framework in Decades of History from the Deterioration of the Roman Empire (14391453). Tripartite periodization became standard after the German historian Christoph Cellarius published Universal History Divided into an Ancient, Medieval, and New Period (1683).
Question: Who was the author of "Decades of History from the Deterioration of the Roman Empire

Output: Flavio Biondo

Input: Read this: Between 1945 and 1989, the share of ethnic Estonians in the population resident within the currently defined boundaries of Estonia dropped to 61%, caused primarily by the Soviet programme promoting mass immigration of urban industrial workers from Russia, Ukraine, and Belarus, as well as by wartime emigration and Joseph Stalin's mass deportations and executions.[citation needed] By 1989, minorities constituted more than one-third of the population, as the number of non-Estonians had grown almost fivefold.
Question: What period did the amount of ethnic Estonians drop by 61%?

Output:
Between 1945 and 1989