<http://webisa.webdatacommons.org/prov/171219397>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/68089651> .
<http://webisa.webdatacommons.org/68089651>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<researchgate.net> .
<http://webisa.webdatacommons.org/68089651>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/68089651>	<http://www.w3.org/ns/prov#value>	"Khat is a drug widely used in the Horn of Africa and the Arabian Peninsula." .