The European Strategy for Data~\cite{eu-strategy-for-data} sets the goal of a single market for data built around Common European Data Spaces, so that more data can circulate while the original holders retain control. However, as also stressed by both the Data Governance Act (DGA)~\cite{eu-dga} and the Data Act~\cite{eu-data-act}, today’s landscape is fragmented; the reasons for this fragmentation include implications as regards semantic and technical interoperability, as well as the reluctance of data holders in sharing their data due to the potential of losing control regarding their use. The latter is greatly an issue of interoperation; when a potential data consumer tries to ingest a third-party dataset, it must adhere to the provider’s access and usage constraints and the lack of automation thereof often undermines synergies.

In light of these issues, this paper has a twofold goal: On the one hand, to allow for semantic interoperability of policies defined by different parties. On the other hand, to allow for semantic conflict identification between these policies, and provide the means for their comprehensive resolution. 
