( (IP-MAT (NP-LGS *pro*)
          (PP-SBJ (NP (PRO これ))
                  (P-OPTR は))
          (NP-ADV (NUMCLP (NUM 一)
                          (CL 層))
                  (NUMCLP (NUM 一)
                          (CL 層)))
          (VB 積み重ね)
          (PASS られ)
          (P-CONN て)
          (VB2 い)
          (AX ます))
  (ID 135_ted_talk_9;AnthonyAtala_2009P;JP))