139_a_stuck_japan
It's essential to keep the concrete pumping.

0139_0002's 's 0139_0001__It it 0139_0002's->0139_0001__It [arg0] 0139_0003__essential essential 0139_0002's->0139_0003__essential [prd] 0139_0005__keep keep 0139_0003__essential->0139_0005__keep [emb] 0139_0006__the_0139_0007__concrete the_concrete 0139_0005__keep->0139_0006__the_0139_0007__concrete [arg1] 0139_0008__pumping pumping 0139_0005__keep->0139_0008__pumping [prd] z_0139_5004 _ 0139_0005__keep->z_0139_5004 [arg0]
arc(r_0139_0002___apos_s,r_0139_0001__It,arg0).
arc(r_0139_0002___apos_s,r_0139_0003__essential,prd).
arc(r_0139_0003__essential,r_0139_0005__keep,emb).
arc(r_0139_0005__keep,r_0139_0006__the_r_0139_0007__concrete,arg1).
arc(r_0139_0005__keep,r_0139_0008__pumping,prd).
arc(r_0139_0005__keep,z_0139_5004,arg0).


IP-MAT NP-SBJ PRO It BEP 's ADJP-PRD ADJ essential IP-INF TO to VB;~Cn.a keep NP-OB1 D the N concrete ADJP-PRD ADJ pumping PUNC .
( (IP-MAT (NP-SBJ (PRO It;{it}))
          (BEP <apos>s;{be})
          (ADJP-PRD (ADJ essential;{essential})
                    (IP-INF (TO to;{to})
                            (VB;~Cn.a keep;{keep})
                            (NP-OB1 (D the;{the})
                                    (N concrete;{concrete}))
                            (ADJP-PRD (ADJ pumping;{pumping}))))
          (PUNC .))
  (ID 139_a_stuck_japan))