The libretto had already been set to music by Leonardo Vinci in 1729 and was used as the text for more than sixty operas throughout the 18th century .
DET NOUN AUX ADV AUX VERB ADP NOUN ADP PROPN PROPN ADP NUM CCONJ AUX VERB ADP DET NOUN ADP ADJ SCONJ NUM NOUN ADP DET ADJ NOUN .