About: http://webisa.webdatacommons.org/283544163

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The Thames today is a relatively narrow stream, but in prehistoric days it was much broader and flanked by impassable marshes which prevented access to the river except at one or two points.
http://www.w3.org/ns/prov#wasQuotedFrom	pla.co.uk