<http://webisa.webdatacommons.org/prov/110398390>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/394128347> .
<http://webisa.webdatacommons.org/394128347>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<nfb.org> .
<http://webisa.webdatacommons.org/394128347>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/394128347>	<http://www.w3.org/ns/prov#value>	"In our production-oriented environment at Montana, it just is not practical to convert some books into e-text because they have too many formulas, equations, illustrations, or other problems, such as color shading on pages." .