<http://webisa.webdatacommons.org/20440892>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<docstoc.com> .
<http://webisa.webdatacommons.org/prov/334106573>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/20440892> .
<http://webisa.webdatacommons.org/20440892>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/20440892>	<http://www.w3.org/ns/prov#value>	"FIG. 4a is a plan view illustrating single trenches which are formed on the substrate in one direction; and" .