1. Basic Geo (WGS84 lat/long) vocabulary. https://www.w3.org/2003/01/geo/
2. Bioportal ontologies. https://bioportal.bioontology.org/ontologies
3. Climate and forecast features. https://www.w3.org/2005/Incubator/ssn/ssnx/cf/cf-feature
4. DATEX II. http://www.datex2.eu/
5. EDOAL: Expressive and declarative ontology alignment language. http://alignapi.gforge.inria.fr/edoal.html