About: http://webisa.webdatacommons.org/91748581

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	(R1)3SiN(R2)2???(2) wherein R1 is independently selected from an alkyl group of 1 to 4 carbon atoms, vinyl group and phenyl group, R2 is hydrogen or as defined for R1, and m is an integer of 0 to 4,
http://www.w3.org/ns/prov#wasQuotedFrom	google.com