About: http://webisa.webdatacommons.org/340559267

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	General estimates ranged from four to eight years.Part of the problem is a lack of consensus on how English proficiency is defined.
http://www.w3.org/ns/prov#wasQuotedFrom	ecs.org