<http://webisa.webdatacommons.org/84263209>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/84263209>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/84263209>	<http://www.w3.org/ns/prov#value>	"Of the compounds represented by the formula (IX), a more preferable compound is one in which both R20 and R21 are hydrogen, R22 and R23, which may be the same or different, are an alkyl group having 1 to 4 carbon atoms, or combined together to form bicyclo(3,3,1)9-nonylidene or norbornylidene, and the ring formed with Y is naphthalene which may be substituted by an alkyl group having 1 to 20 carbo" .
<http://webisa.webdatacommons.org/prov/15779061>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/84263209> .