<http://webisa.webdatacommons.org/199567260>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/199567260>	<http://www.w3.org/ns/prov#value>	"Approximately 50 compounds, notably from the flavonoid, alkaloid, terpene, and sterol classes, have been isolated from the leaves of Piper umbellatum." .
<http://webisa.webdatacommons.org/199567260>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<researchgate.net> .
<http://webisa.webdatacommons.org/prov/411596796>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/199567260> .