Basic Formal Ontology

Tree

Source:

http://purl.obolibrary.org/obo/BFO_0000001
https://github.com/BFO-ontology/BFO-2020/blob/master/BFO%20hierarchy.png not found,
https://github.com/BFO-ontology/BFO-2020/tree/master
https://ontology.buffalo.edu/bfo/BFO2.png - except for the t on Thing, whoch is above entity, each letter lower case

The (first?) two are different.

http://purl.obolibrary.org/obo/BFO_0000001 entity
1. http://purl.obolibrary.org/obo/BFO_0000002 continuant
  1. http://purl.obolibrary.org/obo/BFO_0000004 independent continuant
    1. http://purl.obolibrary.org/obo/BFO_0000040 material entity
      1. http://purl.obolibrary.org/obo/BFO_0000024 fiat object part
      2. http://purl.obolibrary.org/obo/BFO_0000027 object aggregate
      3. http://purl.obolibrary.org/obo/BFO_0000030 object
    2. http://purl.obolibrary.org/obo/BFO_0000141 immaterial entity
      1. http://purl.obolibrary.org/obo/BFO_0000006 spatial region
        http://purl.obolibrary.org/obo/BFO_0000009 two-dimensional spatial region
        
        http://purl.obolibrary.org/obo/BFO_0000018 zero-dimensional spatial region
        
        http://purl.obolibrary.org/obo/BFO_0000026 one-dimensional spatial region
        
        http://purl.obolibrary.org/obo/BFO_0000028 three-dimensional spatial region
      2. http://purl.obolibrary.org/obo/BFO_0000029 site
      3. http://purl.obolibrary.org/obo/BFO_0000140 continuant fiat boundary
        http://purl.obolibrary.org/obo/BFO_0000142 one-dimensional continuant fiat boundary
        
        http://purl.obolibrary.org/obo/BFO_0000146 two-dimensional continuant fiat boundary
        
        http://purl.obolibrary.org/obo/BFO_0000147 zero-dimensional continuant fiat boundary
  2. http://purl.obolibrary.org/obo/BFO_0000020 specifically dependent continuant
    1. http://purl.obolibrary.org/obo/BFO_0000017 realizable entity
      1. http://purl.obolibrary.org/obo/BFO_0000016 disposition
        http://purl.obolibrary.org/obo/BFO_0000034 function
      2. http://purl.obolibrary.org/obo/BFO_0000023 role
    2. http://purl.obolibrary.org/obo/BFO_0000019 quality
      1. http://purl.obolibrary.org/obo/BFO_0000145 relational quality
  3. http://purl.obolibrary.org/obo/BFO_0000031 generically dependent continuant
2. http://purl.obolibrary.org/obo/BFO_0000003 occurent
  1. http://purl.obolibrary.org/obo/BFO_0000008 temporal region
    1. http://purl.obolibrary.org/obo/BFO_0000038 one-dimensional temporal region
      1. github BFO hierarchy.png: temporal interval
    2. http://purl.obolibrary.org/obo/BFO_0000148 zero-dimensional temporal region
      1. github BFO hierarchy.png: temporal instant
  2. http://purl.obolibrary.org/obo/BFO_0000011 spatiotemporal region
  3. http://purl.obolibrary.org/obo/BFO_0000015 process
    1. http://purl.obolibrary.org/obo/BFO_0000144 process profile - not in github BFO hierarchy.png
    2. http://purl.obolibrary.org/obo/BFO_0000182 history
  4. http://purl.obolibrary.org/obo/BFO_0000035 process boundary

Release

https://ncorwiki.buffalo.edu/index.php/BFO_Release_History:_From_BFO_1_to_BFO-ISO

2001 : BFO 1
2007 : BFO 1.1
2015 : BFO 2
1. http://ncorwiki.buffalo.edu/index.php/Basic_Formal_Ontology_2.0
2. http://ontology.buffalo.edu/bfo/BFO2.png
2020 : BFO-2020

Third party text

BFO based ontology

https://www.sciencedirect.com/science/article/pii/S1877050919307380 - The Ontology of Systems Engineering: Towards a Computational Digital Engineering Semantic Framework

Fiat - Bona Fide

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3520998/ - Fiat or Bona Fide Boundary—A Matter of Granular Perspective

Site - continuant fiat boundary

http://purl.obolibrary.org/obo/BFO_0000029 : site
1. elucidation: b is a site means: b is a three-dimensional immaterial entity that is (partially or wholly) bounded by a material entity or it is a three-dimensional immaterial part thereof. (axiom label in BFO2 Reference: [034-002])
2. example of usage: an air traffic control region defined in the airspace above an airport;
http://purl.obolibrary.org/obo/BFO_0000140 : continuant fiat boundary
1. editor note: BFO 2 Reference: a continuant fiat boundary is a boundary of some material entity (for example: the plane separating the Northern and Southern hemispheres; the North Pole), or it is a boundary of some immaterial entity (for example of some portion of airspace). Three basic kinds of continuant fiat boundary can be distinguished (together with various combination kinds
http://purl.obolibrary.org/obo/BFO_0000146 : two-dimensional continuant fiat boundary
1. elucidation: a two-dimensional continuant fiat boundary (surface) is a self-connected fiat surface whose location is defined in relation to some material entity. (axiom label in BFO2 Reference: [033-001])
http://purl.obolibrary.org/obo/BFO_0000141 : immaterial entity
1. editor note: BFO 2 Reference: Immaterial entities are divided into two subgroups: boundaries and sites, which bound, or are demarcated in relation, to material entities, and which can thus change location, shape and size and as their material hosts move or change shape or size (for example: your nasal passage; the hold of a ship; the boundary of Wales (which moves with the rotation of the Earth) [38, 7, 10

http://purl.obolibrary.org/obo/ENVO_01001199 : terrestrial environmental zone - An environmental zone which is bounded by material parts of a land mass or the atmosphere or space adjacent to it.
1. closest BFO class: object (via astronomical body part - astronomical body - astronomical object), fiat object, material entity (via astronomical body part)
http://purl.obolibrary.org/obo/ENVO_01001567 : protected area
1. closest BFO class: object (via: astronomical object - fiat part of an astronomical object), fiat object (via fiat part of an astronomical object)
  1. note fiat object = http://purl.obolibrary.org/obo/BFO_0000024 = but this is named "fiat object part"
2. below:
  1. area of protected biodiversity (18)
  2. world heritage site