4_a_cat_mouse
This is a wall .
arc(r_0004_0002__is,r_0004_0001__This,arg0).
arc(r_0004_0002__is,r_0004_0003__a_r_0004_0004__wall,prd2).
( (IP-MAT (NP-SBJ;{WALL} (D;_nphd_ This;{this}))
(BEP;~Ln is;{be})
(NP-PRD2 (D a;{a})
(N wall;{wall}))
(PUNC .))
(ID 4_a_cat_mouse))