External Ontology DOI / homepage if no DOI License FAIRsharing URL AgroVoc http://agrovoc.uniroma2.it/agrovoc/agrovoc/en/, http://www.semantic-web-journal.net/content/agrovoc-linked-dataset https://creativecommons.org/licenses/by/3.0/igo/ https://doi.org/10.25504/FAIRsharing.anpj91 EDAM http://doi.org/10.1093/bioinformatics/btt113 http://creativecommons.org/licenses/by-sa/4.0/ https://doi.org/10.25504/FAIRsharing.a6r7zs NCIT http://dx.doi.org/10.3233/978-1-60750-949-3-33 https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.25504/FAIRsharing.4cvwxa OBI https://doi.org/10.1371/journal.pone.0154556 http://creativecommons.org/licenses/by/3.0/ https://doi.org/10.25504/FAIRsharing.284e1z OMIT https://doi.org/10.1371/journal.pone.0100855 and https://doi.org/10.1186/s13326-016-0064-2 https://creativecommons.org/licenses/by/3.0/ https://doi.org/10.25504/FAIRsharing.mf91p5 PO http://www.plantontology.org/ https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.25504/FAIRsharing.3ngg40 re3data subject hierarchy https://www.re3data.org/browse/by-subject/ https://creativecommons.org/publicdomain/zero/1.0/ and https://creativecommons.org/licenses/by/4.0/ where PD is not possible