About: http://webisa.webdatacommons.org/400498313

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	To achieve extremely low temperatures, liquefied gases such as liquid nitrogen or liquid helium may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	newworldencyclopedia.org