Input: Article: According to Joshua Baron – a "researcher, lecturer, and consultant on international conflict" – since the early 1960s direct military conflicts and major confrontations have "receded into the background" with regards to relations among the great powers. Baron argues several reasons why this is the case, citing the unprecedented rise of the United States and its predominant position as the key reason. Baron highlights that since World War Two no other great power has been able to achieve parity or near parity with the United States, with the exception of the Soviet Union for a brief time. This position is unique among the great powers since the start of the modern era (the 16th century), where there has traditionally always been "tremendous parity among the great powers". This unique period of American primacy has been an important factor in maintaining a condition of peace between the great powers.

Now answer this question: Who's primacy has factored into maintaining peace among powers?

Output: American


Article: By 500 BC, the Persian Empire controlled the Greek city states in Asia Minor and had made territorial gains in the Balkans and Eastern Europe proper as well. Attempts by some of the Greek city-states of Asia Minor to overthrow Persian rule failed, and Persia invaded the states of mainland Greece in 492 BC, but was forced to withdraw after a defeat at the Battle of Marathon in 490 BC. A second invasion by the Persians followed in 480 BC. Despite a heroic resistance at Thermopylae by Spartans and other Greeks led by King Leonidas, and a simultaneous naval engagement at Artemisium,[page needed] Persian forces occupied Athens, which had been evacuated in time, as well as briefly overrunning half of Greece. Following decisive Greek victories in 480 and 479 BC at Salamis, Plataea, and Mycale, the Persians were forced to withdraw for a second time, marking their eventual withdrawal from all of their European territories. Led by Athens and Sparta, the Greek victories in the Greco-Persian Wars are considered a pivotal moment in world history, as the 50 years of peace that followed are known as Golden Age of Athens, the seminal period of ancient Greece that laid many of the foundations of Western civilization.

Question: What battle did Persia lose in 490 BC?
Ans: Battle of Marathon


Here is a question about this article: The book has also been adapted as a play by Christopher Sergel. It debuted in 1990 in Monroeville, a town that labels itself "The Literary Capital of Alabama". The play runs every May on the county courthouse grounds and townspeople make up the cast. White male audience members are chosen at the intermission to make up the jury. During the courtroom scene the production moves into the Monroe County Courthouse and the audience is racially segregated. Author Albert Murray said of the relationship of the town to the novel (and the annual performance): "It becomes part of the town ritual, like the religious underpinning of Mardi Gras. With the whole town crowded around the actual courthouse, it's part of a central, civic education—what Monroeville aspires to be."
What is the answer to this question: When was the play for To Kill a Mockingbird first performed?
****
So... 1990


The problem: Answer a question about this article:
Southampton has two large live music venues, the Mayflower Theatre (formerly the Gaumont Theatre) and the Guildhall. The Guildhall has seen concerts from a wide range of popular artists including Pink Floyd, David Bowie, Delirious?, Manic Street Preachers, The Killers, The Kaiser Chiefs, Amy Winehouse, Lostprophets, The Midnight Beast, Modestep, and All Time Low. It also hosts classical concerts presented by the Bournemouth Symphony Orchestra, City of Southampton Orchestra, Southampton Concert Orchestra, Southampton Philharmonic Choir and Southampton Choral Society.
What choir from the area has sung at the Guildhall?
****
The answer: Southampton Philharmonic Choir


Problem: Please answer a question about the following article about YouTube:
Observing that face-to-face communication of the type that online videos convey has been "fine-tuned by millions of years of evolution", TED curator Chris Anderson referred to several YouTube contributors and asserted that "what Gutenberg did for writing, online video can now do for face-to-face communication". Anderson asserted that it's not far-fetched to say that online video will dramatically accelerate scientific advance, and that video contributors may be about to launch "the biggest learning cycle in human history." In education, for example, the Khan Academy grew from YouTube video tutoring sessions for founder Salman Khan's cousin into what Forbes'  Michael Noer called "the largest school in the world", with technology poised to disrupt how people learn.
What other surprising aspect of human development will youtube likely have an impact on?
A: education


Question: Read this and answer the question

The Richmond metro area is served by many local television and radio stations. As of 2010[update], the Richmond-Petersburg designated market area (DMA) is the 58th largest in the U.S. with 553,950 homes according to Nielsen Market Research. The major network television affiliates are WTVR-TV 6 (CBS), WRIC-TV 8 (ABC), WWBT 12 (NBC), WRLH-TV 35 (Fox), and WUPV 65 (CW). Public Broadcasting Service stations include WCVE-TV 23 and WCVW 57. There are also a wide variety of radio stations in the Richmond area, catering to many different interests, including news, talk radio, and sports, as well as an eclectic mix of musical interests.

Per Nielsen, how many homes exist in the Richmond-Petersburg DMA?
Answer:
553,950