arc(r_0235_0002__said,r_0235_0001__I,arg0).
arc(r_0235_0002__said,r_0235_0006__happened,arg1).
arc(r_0235_0006__happened,r_0235_0005__What,arg0).

( (IP-MAT (NP-SBJ (PRO I;{I}))
          (VBD said;{say})
          (PUNC ,)
          (PULQ <ldquo>)
          (CP-QUE-OB1 (IP-SUB (NP-SBJ (WPRO What;{what}))
                              (VBD happened;{happen}))
                      (PUNC ?))
          (PURQ <rdquo>))
  (ID 235_a_ted_talk_11))