<http://webisa.webdatacommons.org/prov/54599813> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/357043033> . <http://webisa.webdatacommons.org/357043033> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/357043033> <http://www.w3.org/ns/prov#wasQuotedFrom> <faqs.org> . <http://webisa.webdatacommons.org/prov/215516588> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/357043033> . <http://webisa.webdatacommons.org/357043033> <http://www.w3.org/ns/prov#value> "Click reaction, S is a spacer or a bond, preferably a covalent bond and N" .