Complex sentence: Christian Vannequé (20 August 1949-9 January 2015) was head sommelier of La Tour d'Argent, a famous three star restaurant in Paris.
Split into simpler sentences: Christian Vannequé (20 August 1949--9 January 2015) was a sommelier and restaurateur. He was head sommelier of La Tour d'Argent, a three star restaurant in Paris.