Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Lewis Hamilton may not have had it all his own way in Mexico, but the newly-crowned world champion has described the home crowd and atmosphere as the 'most incredible thing I've ever seen'. The Briton sealed his third Formula One crown in Austin last weekend but was stuck behind Nico Rosberg from start to finish on Sunday. Hamilton, who posed for a selfie with the grid girls after the grand prix, says he had a fun weekend despite slipping to a rare second-place finish. More than 100,000 fans packed into the newly-revamped Autodromo Hermanos Rodriguez as the sport returned to Mexico City after a 23-year absence.Nico Rosberg claims win ahead of Lewis Hamilton at Mexican Grand PrixHamilton says he had a 'fun' race and it was nice not to think about pointsNewly-crowned world champion says home crowd were 'incredible''I've never seen anything like it, this crowd. It is like a football game'More than 100,000 fans packed into the Autodromo Hermanos Rodriguez 
 Question:_ has since insisted that he is taking full responsibility for the mistake.

Nico Rosberg