Complex sentence: Saint Amabilis of Riom (or "Amabilis of Auvergne") was a French saint who served as a cantor in the church of Saint Mary at Clermont.
Split into simpler sentences: Saint Amabilis of Riom (or "Amabilis of Auvergne") was a French saint. He served as a cantor in the church of Saint Mary at Clermont.