<http://webisa.webdatacommons.org/222496554>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/116376139>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/222496554> .
<http://webisa.webdatacommons.org/222496554>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<stackexchange.com> .
<http://webisa.webdatacommons.org/222496554>	<http://www.w3.org/ns/prov#value>	"they can not have a digit anywhere in the name, it is not just a restriction on starting with a digit. (It is possible to change the catcode of digit to 11 so they become letters then you can use them in names but you can not use them in lengths and other places.)" .