3 | 28. tc(rel_subst2(as;r);A.ds;dec_lookup(A.da;kind(a));de)
& trace_consistent_rel(rho;A.da;tr.proj;rel_subst2(as;r))
& ([[rel_subst2(as;r)]] rho A.ds dec_lookup(A.da;kind(a)) de e s value(a) tr

rel_mng_2(r; rho; A.ds; dec_lookup(A.da;kind(a)); de; e; s; x'; value(a); tr)) tc(rel_subst2(as;r);A.ds;dec_lookup(A.da;kind(a));de) & trace_consistent_rel(rho;A.da;tr.proj;rel_subst2(as;r)) & ([[rel_subst2(as;r)]] rho A.ds dec_lookup(A.da;kind(a)) de e s value(a) tr  rel_mng_2(r; rho; A.ds; dec_lookup(A.da;kind(a)); de; e; s; x'; value(a); tr)) |