Input: Article: Although the Founding Fathers of the United States did not originally intend for American politics to be partisan, early political controversies in the 1790s over the extent of federal government powers saw the emergence of two proto-political parties- the Federalist Party and the Democratic-Republican Party, which were championed by Framers Alexander Hamilton and James Madison, respectively. However, a consensus reached on these issues ended party politics in 1816 for a decade, a period commonly known as the Era of Good Feelings.

Now answer this question: In which year did the period known as the "Era of Good Feelings" begin?

Output: 1816

Input: Article: The term "Early Modern" was introduced in the English language in the 1930s. to distinguish the time between what we call Middle Ages and time of the late Enlightenment (1800) (when the meaning of the term Modern Ages was developing its contemporary form). It is important to note that these terms stem from European history. In usage in other parts of the world, such as in Asia, and in Muslim countries, the terms are applied in a very different way, but often in the context with their contact with European culture in the Age of Discovery.

Now answer this question: What time period is referred to as The Late Enlightenment?

Output: 1800

Input: Article: Unlike the majority of 1980s mainstream singers, the 1990s mainstream pop/R&B singers such as All-4-One, Boyz II Men, Rob Thomas, Christina Aguilera, Backstreet Boys and Savage Garden generally crossed over to the AC charts. Latin pop artists such as Lynda Thomas, Ricky Martin, Marc Anthony, Selena, Enrique Iglesias and Luis Miguel also enjoyed success in the AC charts.

Now answer this question: Mainstream artists from what decade generally did not have success on the adult contemporary charts?

Output:
1980s