About: http://webisa.webdatacommons.org/17111621

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	CO2 in concentrations over 1% starts causing headaches, lassitude and other symptoms.
http://www.w3.org/ns/prov#wasQuotedFrom	pjmedia.com