Complex sentence: He was appointed parish priest of San Bartolo Otzolotepec, where he spent the most productive years of his ministerial year later in April 1951, named as the first bishop of the Diocese of Toluca, which builds the current cathedral and the seminary.
Split into simpler sentences: He was appointed parish priest of San Bartolo Otzolotepec, where he spent the most productive years of his life. In April 1951, he was named as the first bishop of the Diocese of Toluca, which builds the current cathedral and the seminary.