About: http://webisa.webdatacommons.org/185371101

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	t and lowest levels of secondhand smoke exposure that were not adequately controlled for in the study are baseline levels of cognitive function, parental smoking, parental education, social class, and marijuana and other drug use.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com