About: http://webisa.webdatacommons.org/235661392

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	In an alternative embodiment, J contains one heteroatom selected from O or S. The chain may be substituted with R14, such as H or methyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com