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Immigration to the United States of Spanish-speaking Cubans began because of Cuba's political instability upon achieving independence. The deposition of Fulgencio Batista's dictatorship and the ascension of Fidel Castro's government in 1959 increased Cuban immigration to the United States, hence there are some one million Cubans in the United States, most settled in southern and central Florida, while other Cubans live in the Northeastern United States; most are fluent in Spanish. In the city of Miami today Spanish is the first language mostly due to Cuban immigration.
Who came into power in Cuba in 1959?
A: unanswerable

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In 1937 over 100 people died after ingesting "Elixir Sulfanilamide" manufactured by S.E. Massengill Company of Tennessee. The product was formulated in diethylene glycol, a highly toxic solvent that is now widely used as antifreeze. Under the laws extant at that time, prosecution of the manufacturer was possible only under the technicality that the product had been called an "elixir", which literally implied a solution in ethanol. In response to this episode, the U.S. Congress passed the Federal Food, Drug, and Cosmetic Act of 1938, which for the first time required pre-market demonstration of safety before a drug could be sold, and explicitly prohibited false therapeutic claims.
What is Diethylene Glycol commonly used for now?
A: antifreeze

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Other sections of society included the nobility, clergy, and townsmen. Nobles, both the titled nobility and simple knights, exploited the manors and the peasants, although they did not own lands outright but were granted rights to the income from a manor or other lands by an overlord through the system of feudalism. During the 11th and 12th centuries, these lands, or fiefs, came to be considered hereditary, and in most areas they were no longer divisible between all the heirs as had been the case in the early medieval period. Instead, most fiefs and lands went to the eldest son.[R] The dominance of the nobility was built upon its control of the land, its military service as heavy cavalry, control of castles, and various immunities from taxes or other impositions.[S] Castles, initially in wood but later in stone, began to be constructed in the 9th and 10th centuries in response to the disorder of the time, and provided protection from invaders as well as allowing lords defence from rivals. Control of castles allowed the nobles to defy kings or other overlords. Nobles were stratified; kings and the highest-ranking nobility controlled large numbers of commoners and large tracts of land, as well as other nobles. Beneath them, lesser nobles had authority over smaller areas of land and fewer people. Knights were the lowest level of nobility; they controlled but did not own land, and had to serve other nobles.[T]
In this period, who usually inherited fiefs?
A: the eldest son

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Captain John Charles Marshall and Thomas Gilbert visited the islands in 1788. The islands were named for Marshall on Western charts, although the natives have historically named their home "jolet jen Anij" (Gifts from God). Around 1820, Russian explorer Adam Johann von Krusenstern and the French explorer Louis Isidore Duperrey named the islands after John Marshall, and drew maps of the islands. The designation was repeated later on British maps.[citation needed] In 1824 the crew of the American whaler Globe mutinied and some of the crew put ashore on Mulgrave Island. One year later, the American schooner Dolphin arrived and picked up two boys, the last survivors of a massacre by the natives due to their brutal treatment of the women.:2
Which French citizen was involved in naming the Marshall Islands?
A:
Louis Isidore Duperrey