About: http://webisa.webdatacommons.org/369402731

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	Also present may be other compounds, including oligomers of the formula ##STR2## wherein R1 and X1 are as previously defined and q is a small number, typically about 1-4.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au