<http://webisa.webdatacommons.org/80638007>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/80638007>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/472221912>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/80638007> .
<http://webisa.webdatacommons.org/80638007>	<http://www.w3.org/ns/prov#value>	"It can be seen that for altitudes of e.g. 500 m, the mobile unit position error exceeds 20 m for substantial parts of the own cell." .