This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

[Q]: Passage: Season ten of the series premiered on January 19, 2011. Many changes were introduced this season, from the format to the personnel of the show. Jennifer Lopez and Steven Tyler joined Randy Jackson as judges following the departures of Simon Cowell (who left to launch the U.S. version of The X Factor), Kara DioGuardi (whose contract was not renewed) and Ellen DeGeneres, while Nigel Lythgoe returned as executive producer. Jimmy Iovine, chairman of the Interscope Geffen A&M label group, the new partner of American Idol, acted as the in-house mentor in place of weekly guest mentors, although in later episodes special guest mentors such as Beyoncé, will.i.am and Lady Gaga were brought in. Question: Who replace weekly mentors as a more permanent mentor on American Idols tenth season? 
[A]: Jimmy Iovine


[Q]: Passage: Prussia emerged from the war as a great power whose importance could no longer be challenged. Frederick the Great’s personal reputation was enormously enhanced, as his debt to fortune (Russia’s volte-face after Elizabeth’s death) and to the British subsidy were soon forgotten while the memory of his energy and his military genius was strenuously kept alive. Russia, on the other hand, made one great invisible gain from the war: the elimination of French influence in Poland. The First Partition of Poland (1772) was to be a Russo-Prussian transaction, with Austria only reluctantly involved and with France simply ignored. Question: What gain did Russia make from the results of the war?
[A]: Russia, on the other hand, made one great invisible gain from the war: the elimination of French influence in Poland


[Q]: Passage: Despite waiving longtime running back DeAngelo Williams and losing top wide receiver Kelvin Benjamin to a torn ACL in the preseason, the Carolina Panthers had their best regular season in franchise history, becoming the seventh team to win at least 15 regular season games since the league expanded to a 16-game schedule in 1978. Carolina started the season 14–0, not only setting franchise records for the best start and the longest single-season winning streak, but also posting the best start to a season by an NFC team in NFL history, breaking the 13–0 record previously shared with the 2009 New Orleans Saints and the 2011 Green Bay Packers. With their NFC-best 15–1 regular season record, the Panthers clinched home-field advantage throughout the NFC playoffs for the first time in franchise history. Ten players were selected to the Pro Bowl (the most in franchise history) along with eight All-Pro selections. Question: How many teams have won 15 regular season games since the 16-game schedule was adopted?
[A]:
7


