Complex sentence: In 1941, when she was 14 years old, she went with her parents to San Juan with the intention of participating in a radio talent show-and as a result made her radio singing debut, on the radio programme of Rafael Quiñones Vidal.
Split into simpler sentences: In 1941, when she was 14 years old, she went with her parents to San Juan with the intention of participating in a radio talent show. That's how she made her radio singing debut, on the radio program of Rafael Quiñones Vidal.