Roleset id: 01 , inquiring, asking for an explanation

Frame:

(SBAR
        (SUB_CONJ أن)
        (S
          (NP-TPC-1
            (PRON_3FS ها))
          (VP
            (PV+PVSUFF_SUBJ:3FS حاولت)
            (NP-SBJ
              (-NONE- *T*-1))
            (S-NOM-OBJ
              (VP
                (DET+NOUN.VN+CASE_DEF_ACC الاستفسار)
                (NP-SBJ
                  (-NONE- *))
                (PP
                  (PREP من)
                  (NP
                    (NOUN+CASE_DEF_GEN رؤسائ)
                    (NP
                      (POSS_PRON_3FS ها))))
                (PP-CLR
                  (PREP عن)
                  (NP
                    (NP
                      (DET+NOUN+NSUFF_FEM_PL+CASE_DEF_GEN المشاركات)
                      (DET+ADJ+NSUFF_FEM_SG+CASE_DEF_GEN المعقدة))
                    (SBAR
                      (WHNP-2
                        (REL_PRON التي))
                      (S
                        (VP
                          (PV+PVSUFF_SUBJ:3FS انخرطت)
                          (PP
                            (PREP في)
                            (NP
                              (NP
                                (PRON_3FS ها))
                              (NP
                                (-NONE- *T*-2))))
                          (NP-SBJ
                            (DET+NOUN+NSUFF_FEM_SG+CASE_DEF_NOM الشركة))
                          (PP-MNR
                            (PREP من)
                            (NP
                              (NOUN+CASE_DEF_GEN دون)
                              (NP
                                (NP
                                  (DET+NOUN+CASE_DEF_GEN الحصول))
                                (PP
                                  (PREP على)
                                  (NP
                                    (NOUN+NSUFF_FEM_SG+CASE_INDEF_GEN أجوبة)
                                    (ADJ+NSUFF_FEM_SG+CASE_INDEF_GEN مقنعة)))))))))))))))))
    (PUNC .)))