Check for possible inconsistencies in OEKG

Description of the issue

Building an ontology and a knowledge graph are long-term tasks that need continuous refinement. The OEKG mainly uses the OEO for its schema. Also, it uses other ontologies. Some relations in the OEKG do not exist yet in the OEO (for example: "has framework"). Therefore, we need to check for possible inconsistencies in the OEKG. We need to make decisions about adding the missing relations to the OEO or utilizing other ontologies.

Ideas of solution

1. Check if the entity types and relations within the OEKG are in accordance with the desired schema uploaded here.
2. Prepare a list of inconsistencies and discuss the solutions.

Workflow checklist

• I am aware of the workflow in CONTRIBUTING.md