When the verb is in the 3rd person singular, the construction is potentially ambiguous between an indefinite se-construction, in which the NP is the object of the verb, and a passive se-construction, in which the NP is the subject of the verb. Different solutions were taken by the different corpora.
In Cordial-Sin, Post Scriptum and Wochwel, ambiguous cases are annotated, by default, as impersonal constructions:
(IP-MAT (NP-SBJ-1 *exp*)
       (PP (P @A)
           (NP (D-F-P @as)
               (N-P vezes)))
       (VB-P-3S apanha@)
       (NP-SE-1 (CL @se))
       (NP-ACC (D-UM-F uma)
                (N quantidade)
                (PP (P @de)
                    (NP (DEM @aquilo))))
       (. .))
(CORDIAL-SIN; ID VPA10)
In Tycho Brahe, ambiguous cases are annotated, by default, as passive constructions:
( (IP-MAT (VB-D Queimava)
      (NP-SE-1 (CL se))
      (NP-SBJ-1 (N louro))
      (PP (P com)
          (NP (ADJ-P certos) (N-P betumes) (ADJ-P odorÃferos))))
[...]
(TYCHO BRAHE; ID C_001_PSD,67.989)