About: http://webisa.webdatacommons.org/122168217

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	In another aspect of the invention, A is a benzazolium and B is an azabenzazolium, according to the formula: where the substituents R6-R9 and R16-R19 are as described previously.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com