arc(r_0064_0001__Perhaps_z_0064_1008,r_0064_0004__stone,z_0064_1003).
arc(r_0064_0002__poured,r_0064_0004__stone,arg1).
arc(r_0064_0004__stone,r_0064_0003__artificial,attrib).

( (FRAG (ADVP-MOD (ADV Perhaps;{perhaps}))
        (NP (IP-PPL (NP-LGS *)
                    (VVN;~Tn poured;{pour}))
            (ADJP (ADJ artificial;{artificial}))
            (N stone;{stone}))
        (PUNC .))
  (ID 64_a_dick_1952))