Complex sentence: Benoît Violier (22 August 1971--31 January 2016) was a French-Swiss chef who had owned the three Michelin star Restaurant de l'Hôtel de Ville in a suburb of Lausanne, Switzerland from 2012 to his death.
Split into simpler sentences: Benoît Violier (22 August 1971--31 January 2016) was a deceased French-Swiss chef. Violier owned the three Michelin star Restaurant de l'Hôtel de Ville in a suburb of Lausanne, Switzerland from 2012 to his death.