<http://webisa.webdatacommons.org/389642323>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/389642323>	<http://www.w3.org/ns/prov#value>	"Ralph Smith's research focused on the general problems of air sampling and analysis, biological sampling and analysis, and occupational exposure to substances such as beryllium, lead, carbon black, mercury and chlorine." .
<http://webisa.webdatacommons.org/prov/352185042>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/389642323> .
<http://webisa.webdatacommons.org/389642323>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<aiha.org> .