About: http://webisa.webdatacommons.org/229124706

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	MASS SPECTROMETERS are spectrometers that deal mainly with mass or quantitative amount such as weight in a gravitational field.
http://www.w3.org/ns/prov#wasQuotedFrom	nasa.gov