<http://webisa.webdatacommons.org/251373034> <http://www.w3.org/ns/prov#value> "Alternatively, A may be a group which is related to one of these three moieties in that any carbon is replaced with S or O. For example, A may be a moiety where S replaces one or two carbon atoms such as one of the following or the like." . <http://webisa.webdatacommons.org/prov/165608943> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/251373034> . <http://webisa.webdatacommons.org/251373034> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/251373034> <http://www.w3.org/ns/prov#wasQuotedFrom> <patents.com> .