Complex sentence: The Office is now an Établissement public de coopération culturelle, a public institution run by a board of directors who represent local authorities and the French state, and presided by Lena Louarn, a councillor elected in the Regional Council of Brittany.
Split into simpler sentences: The Office is now an Établissement public de coopération culturelle, a public institution run by a board of directors. It is presided over by Lena Louarn, a councillor elected in the Regional Council of Brittany.