About: http://webisa.webdatacommons.org/364615179

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	However, heavy gases such as carbon dioxide and hydrogen sulfide can collect in low-lying areas.
http://www.w3.org/ns/prov#wasQuotedFrom	nih.gov