Complex sentence: Burchard accumulated an impressive array of ecclesiastical benefices in Alsace, including that of the provost of Moutier-Grandval (1475), Provost of Strasbourg, Provost of Basel, and Dean of Basel (1501).
Split into simpler sentences: Burchard accumulated an array of ecclesiastical benefices in Alsace, including that of the provost of Moutier-Grandval (1475) and Provost of Strasbourg. He was also Provost of Basel, and then Dean of Basel (1501).