About: http://webisa.webdatacommons.org/427556959

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	It is now recognized that about 80 per cent of ulcers are caused by infection from a bacterium called Helicobacter pylori (the remaining 20 per cent is caused by over-use of anti inflammatory drugs such as aspirin and ibuprofen).
http://www.w3.org/ns/prov#wasQuotedFrom	wikibooks.org