question: What famous competitive sailor has been featured giving top tips during Mike Bushell's BBC sports presentations?
answer: Ben Ainslie
context: Title: Mike Bushell (racing driver)
  Passage: Mike Bushell (born 5 July 1989) is a British racing driver.  In 2013, Bushell competed in the British Touring Car Championship for the first time, driving for IP Tech Race Engineering in their Chevrolet Cruze NGTC car at Knockhill in place of Andy Neate.  He returned to the series in 2015 with AmD Tuning, after winning the Renault Clio Cup United Kingdom in 2014.
  Title: Ben Ainslie
  Passage: Sir Charles Benedict Ainslie, CBE (born 5 February 1977) is an English competitive sailor.
  Title: Mike Bushell
  Passage: Mike Bushell is a sports presenter for the BBC.  He presents the sport on "BBC Breakfast" on Fridays and at the weekends, and sometimes on other weekdays.  Bushell holds the world record for trying different sports, on his Saturday morning slot, on BBC 1, in which he tries to inspire people off the sofa, to be more active and try a new activity.  He maintains there is a sport for all, and no one should feel they can't do it.  He has consequently tried out and profiled over 350 sports: ranging from the bizarre like shin kicking, whip cracking and swamp soccer to new mainstream sport initiatives like Rush hockey, spike volleyball, and shopping centre squash.  His features often include top tips from the stars, like Serena Williams, Colin Montgomerie and Ben Ainslie.
citations: Ben Ainslie Mike Bushell