<http://webisa.webdatacommons.org/270090969>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/270090969>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/270090969>	<http://www.w3.org/ns/prov#value>	"An optical head in the first preferred embodiment will be explained in FIGS. 2A to 4C. FIGS. 2A and 2B are a front view and a right side view showing the optical head in the first embodiment." .
<http://webisa.webdatacommons.org/prov/332520829>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/270090969> .