About: http://webisa.webdatacommons.org/386691149

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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	FIG. 7 is a graph for illustrating the etching speeds of the sapphire and GaN by means of the wet etching technique with the mixture etchant of the sulfuric acid and phosphoric acid.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com