<http://webisa.webdatacommons.org/289090826>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/289090826>	<http://www.w3.org/ns/prov#value>	"Clearly, classification of research studies by their designs is a subject that is challenging for students." .
<http://webisa.webdatacommons.org/prov/441150129>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/289090826> .
<http://webisa.webdatacommons.org/289090826>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<kellylockeman.com> .