The concept of trading with bid, awards, etc should be added to the ontology.
From the 5. Hack:

still missing: definitions for trading, bid, award and ausschreibung(?)
I am aware that
decision oeo-dev meeting 14:
Trade: A process in which one commodity or service is exchanged for another commodity or service
I want to implement this new definition. What is the relation between trade on one hand and commodity and service on the other hand. Is it is about?
By the way, we currently do not have a class service.
I want to implement this new definition. What is the relation between
tradeon one hand andcommodityandserviceon the other hand. Is itis about?
is about is restricted to information content entities. I would choose has participant here.
PR #745 will add trade.
Still open are bid, award and ausschreibung ~ call for tenders. But we have also #376 where the same or similar concepts are discussed so I'll close this issue after the PR #745.
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is aboutis restricted toinformation content entities. I would choosehas participanthere.