About: http://webisa.webdatacommons.org/242517062

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	An ulcer is an irritation and inflammation of the gastrointestinal tract, usually in the first part of the small intestine (duodenum) or the stomach.
http://www.w3.org/ns/prov#wasQuotedFrom	headaches.org