<http://webisa.webdatacommons.org/405287747>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wikibooks.org> .
<http://webisa.webdatacommons.org/405287747>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/940886>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/405287747> .
<http://webisa.webdatacommons.org/405287747>	<http://www.w3.org/ns/prov#value>	"This header contains information such as the offset to the beginning of contiguous free space in the page, the location of free space within the page (the hole chain) and the total amount of free space in the page." .