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<http://webisa.webdatacommons.org/431587178>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<tbs-sct.gc.ca> .
<http://webisa.webdatacommons.org/prov/99125599>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/431587178> .
<http://webisa.webdatacommons.org/431587178>	<http://www.w3.org/ns/prov#value>	"3.4 To help ensure that websites and Web applications can be used effectively and efficiently, Web usability principles and approaches, such as user-centred design, should be implemented." .