About: http://webisa.webdatacommons.org/210514317

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	However, the WHI study is an observational study, not a prospective one and there are uncontrolled factors in an observational study.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com