About: http://webisa.webdatacommons.org/248577114

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	M1B is zirconium or hafnium; R2B is methyl or phenyl; R3B and R4B are independently H or CH3; and n is an integer from 0 to 5, inclusive.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com