About: http://webisa.webdatacommons.org/296364553

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	Condoms, for instance, have a 97 per cent success rate at preventing pregnancy if used correctly, but have an estimated use-effectiveness of 86 per cent, due to problems such as tearing or slipping.
http://www.w3.org/ns/prov#wasQuotedFrom	englishclub.com