( (CP-QUE (IP-SUB (PP (NP (PRO あなた))
                      (P-ROLE にとって))
                  (PP-SBJ (NP (N 生きがい))
                          (P-OPTR とは))
                  (NP-PRD (WPRO 何))
                  (AX です))
          (P-FINAL か)
          (PU 。))
  (ID 163_textbook_djg_advanced;page_179;JP))