<http://webisa.webdatacommons.org/431482724>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/124385089>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/431482724> .
<http://webisa.webdatacommons.org/431482724>	<http://www.w3.org/ns/prov#value>	"For example, how effective is a 3-tier scheme of A, B, and C compared to a similar 4-tier letter scheme?" .
<http://webisa.webdatacommons.org/431482724>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<barfblog.com> .