
Are the following mentions coreferent?:
<m> takes a look </m> in With young British actor Matt Smith stepping into Doctor Who's title role, Wired.com takes a look back at the 10 actors who have previously portrayed sci-fi TV's most enduring hero. 
</s>
<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. 