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<http://webisa.webdatacommons.org/prov/505650361>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/439693884> .
<http://webisa.webdatacommons.org/439693884>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nap.edu> .
<http://webisa.webdatacommons.org/439693884>	<http://www.w3.org/ns/prov#value>	"Conversely, if recall period is short, there is a risk of measuring a very specific event which" .