Assertion: flamenco | /r/HasProperty | professionalized art form
Facets:
value: since the nineteenth century
type: TEMPORAL
value: highly
type: DEGREE
Source sentences:
text: Flamenco is a way of life for those involved in it, and it has been a highly professionalized art form since the nineteenth century, presented before enthusiastic paying non-Gypsy audiences since the early years of that century.