<http://webisa.webdatacommons.org/prov/4124677>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/266703196> .
<http://webisa.webdatacommons.org/266703196>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<freepatentsonline.com> .
<http://webisa.webdatacommons.org/266703196>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/266703196>	<http://www.w3.org/ns/prov#value>	"In yet another embodiment of the invention, a hands-free stairway system for operatively attaching to a roof of a vehicle to provide access to the roof, the stairway system comprising: a stairway body configured for operative attachment to a vehicle, the stairway body including a plurality of steps and a step support, the stairway body further having a contracted configuration and an expanded conf" .