<http://webisa.webdatacommons.org/prov/24404821>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/88507925> .
<http://webisa.webdatacommons.org/88507925>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<alldiscountbooks.net> .
<http://webisa.webdatacommons.org/88507925>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/88507925>	<http://www.w3.org/ns/prov#value>	"Maps are used to support each topic, showing not only geographical features but also any factors contributing to the problem, for example ethnicity or religious allegiance." .