Assertion: libretto's word | /r/HasProperty | printed in small book
Facets:
value: as a commemoration
type: PURPOSE
Source sentences:
text: The earliest operas, beginning in 1597 with Ottavio Rinuccini’s Dafne, set to music by Jacopo Peri, were court entertainments, and as a commemoration the words were printed in a small book, or “libretto.