arc(z_0087_1005_r_0087_0002__required,r_0087_0001__Reagents,arg1).
( (IP-MAT (NP-SBJ (NS Reagents;{reagent})) (IP-PPL-CAT (NP-LGS *) (VVN required;{require})) (PUNC .)) (ID 87_a_lob_j01))