We've got PlaceRef and PartyRef which relate Instances and Place/Party respectively, however we are lacking any means to relate Place/Party to each other, so we can have:
- a relationship between two places
- a relationship between two parties
- a relationship between a party and place
We've got PlaceRef and PartyRef which relate Instances and Place/Party respectively, however we are lacking any means to relate Place/Party to each other, so we can have: