<http://webisa.webdatacommons.org/57125026>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/57125026>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<pubmedcentralcanada.ca> .
<http://webisa.webdatacommons.org/prov/472639392>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/57125026> .
<http://webisa.webdatacommons.org/57125026>	<http://www.w3.org/ns/prov#value>	"As discussed later in the paper, this discrepancy might account for some of the early failure to connect the two approaches.6.A structural equation is an equation taken directly from the causal model." .