Instructions: 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: Are Chelsea cracking up? Last week I said something was not quite right at Stamford Bridge. Now things are escalating faster than anyone might have expected. This week Jose Mourinho has fallen out with his doctor and now his captain. All of his defenders were playing poorly at Man City and Jose could have subbed off any of them. But he took off John Terry, which was a strange decision. What’s the message there? He always has problems after a few years at a club but there’s one person he won’t want to fall out with — Roman Abramovich.Chelsea fell to a 3-0 defeat at Manchester City in the Premier LeagueJose Mourinho took his captain John Terry off at half time at EtihadFernandinho could be City's hidden hero in title pursuit this seasonThere's a pattern emerging at Sunderland season after seasonRoss Barkley is a jewel in Roberto Martinez's crown at EvertonIt's not too late to sign up for MailOnline's new Fantasy Football game 
 Question:It's easy to talk about Sergio Aguero and David Silva, but if Man City are to win the league _ will be key.
Output:
Fernandinho