Task: Question Generation
Input (English): Passage: Several 16th century writers estimated the 1492 population of Hispaniola at over 1 million people. 20th century estimates of the figure range from 60,000 to 8,000,000, but center around the 500,000 to 1,000,000 range. Harsh enslavement by Spanish colonists, as well as redirection of food supplies and labor towards the colonists, had a devastating impact on both mortality and fertility over the first quarter century. Colonial administrators and Dominican and Hyeronimite priests observed that the search for gold and agrarian enslavement through the encomienda system were depressing population. Demographic data from two provinces in 1514 shows a low birth rate consistent with a 3.5% annual population decline. Just 14,000 Taínos survived in 1517. In 1503 the colony began to import Ethnic groups of Africa slaves after a charter was passed in 1501 allowing the import of slaves by Ferdinand and Isabel. The Spanish believed Africans would be more capable of performing physical labor. From 1519 to 1533, the indigenous uprising known as Enriquillos Revolt ensued, resulting from escaped African slaves on the island possibly working with the Taino people.
Output (English): How many years did the Enriquillos Revolt ensue?