<http://webisa.webdatacommons.org/308670007>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wordpress.com> .
<http://webisa.webdatacommons.org/prov/389826040>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/308670007> .
<http://webisa.webdatacommons.org/308670007>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/308670007>	<http://www.w3.org/ns/prov#value>	"In Europe there was a measurable growth in the 9th and 10th centuries, that accompanied the use of horses to pull plows, but it wasn???t sustained." .