<http://webisa.webdatacommons.org/prov/455181463>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/210766623> .
<http://webisa.webdatacommons.org/prov/104578967>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/210766623> .
<http://webisa.webdatacommons.org/210766623>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/210766623>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/210766623>	<http://www.w3.org/ns/prov#value>	"Roughly midway between its ends (but closer to the end where the pivot pins 12 are located) the base carries an upwardly projecting platen 15 of suitable deformable and resilient material, such as rubber or the like." .