<http://webisa.webdatacommons.org/91437134>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/91437134>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/prov/115715249>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/91437134> .
<http://webisa.webdatacommons.org/91437134>	<http://www.w3.org/ns/prov#value>	"In various embodiments, volume block device 202 may read a given data block stored in duplicate in logical block devices 204 and 206 by issuing a read operation to one mirror device or the other, for example by alternating devices or defaulting to a particular device." .