About: http://webisa.webdatacommons.org/336062314

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	R1 is an alkylene group of the formula ???Cn???H2n(CHOH)oCm H2m???, wherein n and m are independently 1 to 6, and o is 0 or 1, and where the alkylene is optionally interrupted by a catenary oxygen, nitrogen, or sulfur atom;
http://www.w3.org/ns/prov#wasQuotedFrom	google.es