About: http://webisa.webdatacommons.org/449043113

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	at least two years, and usually up to four years, of normal development including speech, social interactions and relationships, and play and adaptive behavior
http://www.w3.org/ns/prov#wasQuotedFrom	medcentral.org