Assertion: nebula's star | /r/HasProperty | m
Facets:
Source sentences:
text: NGC 6530 is classified as Trumpler type II 2 m n, which means that it is a detached cluster with little central concentration (II), that its stars scatter in a moderate range of brightness (2), that it is medium rich in stellar population, with 50 to 100 stars (m), and associated with a nebula (n).