Complex sentence: He led the Welsh team to the semi-final of the Rugby World Cup 2011 against France being held in New Zealand, which took place on 15 October 2011, and then won a second Grand Slam with Wales in the 2012 Six Nations Championship.
Split into simpler sentences: He led the Welsh team to the semi-final of the Rugby World Cup 2011 against France being held in New Zealand, which took place on 15 October 2011. Gatland then won a second Grand Slam in the 2012 Six Nations Championship.