143_a_ted_talk_11
Isn't it?

%3 0143_0001__Is Is 0143_0003__it it 0143_0001__Is->0143_0003__it [arg0] 0143_0002__n't n't 0143_0002__n't->0143_0001__Is [scope]
arc(r_0143_0001__Is,r_0143_0003__it,arg0).
arc(r_0143_0002__n_apos_t,r_0143_0001__Is,keep_scope).

n143_a_ted_talk_11 n143_a_ted_talk_11__1_1_1_1 Is n143_a_ted_talk_11__1_1_2_1 n't n143_a_ted_talk_11__1_1_3_1_1 it n143_a_ted_talk_11__1_2_1 ? n143_a_ted_talk_11__1 CP-QUE-MAT n143_a_ted_talk_11__1_1 IP-SUB n143_a_ted_talk_11__1->n143_a_ted_talk_11__1_1 n143_a_ted_talk_11__1_2 PUNC n143_a_ted_talk_11__1->n143_a_ted_talk_11__1_2 n143_a_ted_talk_11__1_1_1 BEP;~equ_Vt n143_a_ted_talk_11__1_1->n143_a_ted_talk_11__1_1_1 n143_a_ted_talk_11__1_1_2 NEG;_clitic_ n143_a_ted_talk_11__1_1->n143_a_ted_talk_11__1_1_2 n143_a_ted_talk_11__1_1_3 NP-SBJ n143_a_ted_talk_11__1_1->n143_a_ted_talk_11__1_1_3 n143_a_ted_talk_11__1_1_1->n143_a_ted_talk_11__1_1_1_1 n143_a_ted_talk_11__1_1_2->n143_a_ted_talk_11__1_1_2_1 n143_a_ted_talk_11__1_1_3_1 PRO n143_a_ted_talk_11__1_1_3->n143_a_ted_talk_11__1_1_3_1 n143_a_ted_talk_11__1_1_3_1->n143_a_ted_talk_11__1_1_3_1_1 n143_a_ted_talk_11__1_2->n143_a_ted_talk_11__1_2_1
( (CP-QUE-MAT (IP-SUB (BEP;~equ_Vt Is;{be})
                      (NEG;_clitic_ n<apos>t;{not})
                      (NP-SBJ (PRO it;{it})))
              (PUNC ?))
  (ID 143_a_ted_talk_11))