Complex sentence: In 1508 he began the Recanati Polyptych altarpiece for the church of San Domenico; this two-tiered and rather conventionally painted polyptych consists of six panels.
Split into simpler sentences: In 1508 he began the Recanati Polyptych altarpiece for the church of San Domenico. This two-tiered, rather conventional painted polyptych consists of six panels.