About: http://webisa.webdatacommons.org/403985168

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	A substance being studied in the treatment of certain types of cancer, including ovarian cancer and lung cancer. 11C topotecan is a radioactive form of the anticancer drug topotecan.
http://www.w3.org/ns/prov#wasQuotedFrom	cancer.gov