<http://webisa.webdatacommons.org/prov/23067985>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/168433086> .
<http://webisa.webdatacommons.org/168433086>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<blogspot.com> .
<http://webisa.webdatacommons.org/168433086>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/168433086>	<http://www.w3.org/ns/prov#value>	"it is not uncommon for professionals from all types of backgrounds to visit classrooms to give students some perspective on their area of expertise." .