About: http://webisa.webdatacommons.org/140083168

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 number of different types of specimens or samples can be collected, including blood, urine, body fluids or secretions, skin swabs, or skin biopsies.
http://www.w3.org/ns/prov#wasQuotedFrom	clinicaltrials.gov