<http://webisa.webdatacommons.org/299399788>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<biomedcentral.com> .
<http://webisa.webdatacommons.org/299399788>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/50382460>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/299399788> .
<http://webisa.webdatacommons.org/299399788>	<http://www.w3.org/ns/prov#value>	"Repeating the analysis but including a variable indicating whether or not students" .