How should I interpret this raw SID data from the FAA?
To your first question, some SIDs exist to provide a basic set of information that will almost always be given as part of a clearance, rather than a path to fly. This allows a controller to not have to state that part of the clearance verbally, saving time and confusion.

On the Bellevue Three Departure from KRNT, the departure is as follows:


  Climb heading 350°, maintain 3000, expect RADAR vectors, expect filed altitude within 5 minutes after departure.


There's no location to code in the procedure (other than that from the Lost Communications section) so while the SID exists, there's not much to code for an automated system to interpret.