About: http://webisa.webdatacommons.org/286808230

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 series of questions were devised which assessed fifteen factors including the duration of the period, the regularity of the period, pain, problems with soiling/staining, interference with work, interference with leisure.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com