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