<http://webisa.webdatacommons.org/263535331>	<http://www.w3.org/ns/prov#value>	"As with any discussion of a topic that covers so many railroads, and so many practices, the information presented here is a guide and may not be correct for the railroad you are interested in." .
<http://webisa.webdatacommons.org/263535331>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<railroadsignals.us> .
<http://webisa.webdatacommons.org/prov/414111801>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/263535331> .
<http://webisa.webdatacommons.org/263535331>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .