Categories in Assign rules not shown in OTBI report

Summary:

I am using OTBI to extract the list of assignment rules, that are used to assign SRs to the correct queue. I want to have the list of categories that are included in each assignment rule. However, now I can only see the first of the categories that are selected in the rules. In other words, the issue here is that there are multiple categories linked to one single rule, but the query is retrieving only the first one.

Anyone has tried to do the same and could share how they solved this?

Here is the query I am using: