PPM Cloud - OTBI - Project task's labor resources - Table or OTBI subject area?

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I'm trying to create OTBI report where should be project tasks and labor resources assigned to the tasks (see attached picture). What is db table or OTBI subject area where this information can be found?

When you assign a labor resource to task you select resource with a role in the project. One labor resource can have many project memberships (and assignments) with different roles in the project.  

Br,

Jaakko