Input: Military history of the United States
The British, for their part, lacked both a unified command and a clear strategy for winning. With the use of the Royal Navy, the British were able to capture coastal cities, but control of the countryside eluded them. A British sortie from Canada in 1777 ended with the disastrous surrender of a British army at Saratoga. With the coming in 1777 of General von Steuben, the training and discipline along Prussian lines began, and the Continental Army began to evolve into a modern force. France and Spain then entered the war against Great Britain as Allies of the US, ending its naval advantage and escalating the conflict into a world war. The Netherlands later joined France, and the British were outnumbered on land and sea in a world war, as they had no major allies apart from Indian tribes.

What two European countries entered the Revolutionary War against Britain?
Output: France and Spain

Input: Detroit
Berry Gordy, Jr. founded Motown Records which rose to prominence during the 1960s and early 1970s with acts such as Stevie Wonder, The Temptations, The Four Tops, Smokey Robinson & The Miracles, Diana Ross & The Supremes, the Jackson 5, Martha and the Vandellas, The Spinners, Gladys Knight & the Pips, The Marvelettes, The Elgins, The Monitors, The Velvelettes and Marvin Gaye. Artists were backed by in-house vocalists The Andantes and The Funk Brothers, the Motown house band that was featured in Paul Justman's 2002 documentary film Standing in the Shadows of Motown, based on Allan Slutsky's book of the same name.

Who wrote a book about Motown?
Output: Allan Slutsky

Input: Arena Football League
The NFL Network ceased airing Arena Football League games partway through the 2012 season as a result of ongoing labor problems within the league. Briefly, the games were broadcast on a tape delay to prevent the embarrassment that would result should the players stage a work stoppage immediately prior to a scheduled broadcast. (In at least once incidence this actually happened, resulting in a non-competitive game being played with replacement players, and further such incidents were threatened.) Once the labor issues were resolved, the NFL Network resumed the practice of broadcasting a live Friday night game. NFL Network dropped the league at the end of the 2012 season.

Why did the NFL Network begin to broadcast games again?
Output: the labor issues were resolved

Input: Sichuan
Sichuan was China's most populous province before Chongqing became a directly-controlled municipality; it is currently the fourth most populous, after Guangdong, Shandong and Henan. As of 1832, Sichuan was the most populous of the 18 provinces in China, with an estimated population at that time of 21 million. It was the third most populous sub-national entity in the world, after Uttar Pradesh, India and the Russian Soviet Federative Socialist Republic until 1991, when the Soviet Union was dissolved. It is also one of the only six to ever reach 100 million people (Uttar Pradesh, Russian RSFSR, Maharashtra, Sichuan, Bihar and Punjab). It is currently 10th.

How many sub-national entities have surpassed 100 million people in total?
Output:
six