<http://webisa.webdatacommons.org/prov/50341909>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/157927905> .
<http://webisa.webdatacommons.org/prov/298807436>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/157927905> .
<http://webisa.webdatacommons.org/157927905>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<eurekalert.org> .
<http://webisa.webdatacommons.org/157927905>	<http://www.w3.org/ns/prov#value>	"PITTSBURGH--Maps, number lines, shapes, artwork and other materials tend to cover elementary classroom walls." .
<http://webisa.webdatacommons.org/157927905>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .