Complex sentence: After winning a competition for folksingers at the 1936 Salzburg Festival, the von Trapps were asked to sing a half hour radio program, which resulted in singing before Austria's chancellor, Kurt von Schuschnigg.
Split into simpler sentences: After winning a competition for folksingers at the 1936 Salzburg Festival, the von Trapps were asked to sing a half hour radio program. The result of that was getting to sing before Austria's chancellor, Kurt von Schuschnigg.