SBVR11 — editorial issue -- example is missing a line

In section 9.2.8, on page 70, the example for "aggregation formulation"
introduces several variables. All but one of the introduced variables is
specifed as ranging over some concept. For example, ". . . . The second
variable ranges over the concept ‘number’."

My issue: there is no corresponding "ranges over" line for the third
variable. It is true (per 9.2.1) that variables need not range over any
concept. But this example would be clearer if the "ranges over" line were
included for that third variable.

I believe this third variable is supposed to range over the concept 'set'.

Add to the example, a line indicating that the third variable ranges over the concept ‘set’.