
Are the following mentions coreferent?:
<m> handed the keys </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> handing over </m> in Tennant has now been voted one of the most popular Doctors of all time and is handing his sonic screwdriver over to actor Matt Smith. 