arc(r_0067_0002__really_r_0067_0003__happened,r_0067_0001__This,arg0).
( (IP-MAT (NP-SBJ (D;_nphd_ This;{this})) (ADVP-MOD (ADV really;{really})) (VBD happened;{happen}) (PUNC .)) (ID 67_a_ted_talk_11))