
Are the following mentions coreferent?:
<m> replacing </m> in On Saturday, the 26-year-old was handed the keys to the Tardis when he was unveiled as the 11th Doctor Who, replacing David Tennant, who steps down later this year. 
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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." 