Grace VanderWaal was announced as the winner on September 14, 2016, making her the second female act and the second child act to win the show since season 1. Mentalist duo, The Clairvoyants, placed second, marking the first time that females placed in the top two positions. Magician Jon Dorenbos, the NFL Long Snapper for the Philadelphia Eagles, placed third.

Who won america's got talent 2016 season 11? Okie... think carefully first, then make a decision:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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To answer the question, consider the following: Grace VanderWaal was announced as the winner on September 14, 2016, making her the second female act and the second child act to win the show since season 1. So, the answer is Grace VanderWaal.