<https://earthdata.nasa.gov/about/esdis-project>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://podaac.jpl.nasa.gov/datasetlist?view=list&ids=Instruments%3APlatforms&values=SSALT%3A%3ADMSP%205D-2/F16%3A%3ANOAA-20%20%28JPSS-1%29&search=GRACE>