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<http://webisa.webdatacommons.org/273368897>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<biomedcentral.com> .
<http://webisa.webdatacommons.org/273368897>	<http://www.w3.org/ns/prov#value>	"worthlessness, feeling everything is an effort, feeling hopeless about the future" .
<http://webisa.webdatacommons.org/prov/477745380>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/273368897> .