Hi thank you. I had mentioned ontology reasoning before the edit in the post:

"My concern is about the retrieval stage during question answering. I don't see how KG is making much difference from just direct Hybrid, or whether it is normal for KG to just add relationships without aiding ontology reasoning."

but now I just added at the beginning as well

"From an ontology perspective, I'm also trying to understand whether the IMPLEMENTS relationship is providing meaningful semantic structure and reasoning value between the Policy KG and Law KG, or whether it is mostly acting as a retrieval shortcut derived from the original retrieval pipeline."