About: http://webisa.webdatacommons.org/273731572

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	A, same or different, is a carbon atom, a germanium atom or a silicon atom; with the proviso that, when m is 1, A is different from a carbon atom; preferably A is a silicon atom;
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr