Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
First version of the OBO Relation Ontology
| Foundational relations |
| is_a |
| part_of |
| Spatial relations (connecting one entity to another in terms of relations between the spatial regions they occupy) |
| located_in |
| contained_in |
| adjacent_to |
| Temporal relations (connecting entities existing at different times) |
| transformation_of |
| derives_from |
| preceded_by |
| Participation relations (connecting processes to their bearers) |
| has_participant |
| has_agent |
