Original sentence: Romano and, from 1970-1972, offered the Premio Quinto Sol literary prize--to Tomás Rivera, Rudolfo Anaya, and Rolando Hinojosa--each of whom is now considered a major literary voice
Edited sentence: Romano and, from 1970-1972, offered the Premio Quinto Sol literary prize—to Tomás Rivera, Rudolfo Anaya, and Rolando Hinojosa--each of whom is now considered a major literary voice