<http://webisa.webdatacommons.org/prov/379844502>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/234178329> .
<http://webisa.webdatacommons.org/234178329>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<tonymarston.co.uk> .
<http://webisa.webdatacommons.org/234178329>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/234178329>	<http://www.w3.org/ns/prov#value>	"For example, on a PERSON table it is unwise to use PERSON_NAME as the key as it is possible to have more than one person with the same name, or the name may change such as through marriage." .