<http://webisa.webdatacommons.org/214283571>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<wikipedia.org> .
<http://webisa.webdatacommons.org/214283571>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/387684726>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/214283571> .
<http://webisa.webdatacommons.org/214283571>	<http://www.w3.org/ns/prov#value>	"The onset of mental fatigue during any cognitive activity is gradual, and depends upon an individual's cognitive ability, and also upon other factors, such as sleep deprivation and overall health." .