About: http://webisa.webdatacommons.org/393619655

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	But nitrogen can only attach to three carbon atoms, so associated with every nitrogen is a gap where a carbon atom would normally sit.
http://www.w3.org/ns/prov#wasQuotedFrom	arstechnica.com