<https://earthdata.nasa.gov/about/esdis-project>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://podaac.jpl.nasa.gov/datasetlist?ids=Instruments:Platforms:Projects&values=TMR::DMSP%205D-2/F10::SSM/I::ERS-2::ECCO&search=GRACE&view=list>