About: http://webisa.webdatacommons.org/273448774

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	wherein the groups R1 through R4; k and m are integers, and n is an integer not equal to zero; and L1, B, L2, and X can include any polymer, agent, or combination described above.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk