arc(r_0090_0002__why,r_0090_0001__So,qual).
arc(r_0090_0003__is,r_0090_0002__why,prd2_cnt).
arc(r_0090_0003__is,r_0090_0004__this,arg0).
arc(z_0090_1002__question,r_0090_0003__is,keep_scope).

( (CP-QUE-MAT (IP-SUB (ADVP-PRD2-CNT (ADVP (ADV So;{so}))
                                     (WADV why;{why}))
                      (BEP;~La is;{be})
                      (NP-SBJ (D;_nphd_ this;{this})))
              (PUNC ?))
  (ID 90_a_ted_talk_11))