
Are the following mentions coreferent?:
<m> replacing </m> in Matt Smith, 26, will make his debut in 2010, replacing David Tennant, who leaves at the end of this year. He is the youngest actor to play the part. He has previously appeared on TV, in films and the theatre and is best known for appearing in the BBC's The Ruby in the Smoke. 
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<m> take over </m> in After lots of speculation, Peter Capaldi has been named the new Doctor for Series 8 of "Doctor Who" He will take over for Matt Smith, the 12th Doctor, who is leaving during the 2013 Christmas Special. The announcement was made Sunday ( August 4 ), during "Doctor Who Live : The Next Doctor," which aired on BBC and BBC America. Capaldi has also appeared on "Doctor Who" before, guest starring in the Series 4 episode "The Fires of Pompeii." 