diff --git a/api/s37_virtual_district.py b/api/s37_virtual_district.py
index 4d2f824..b115814 100644
--- a/api/s37_virtual_district.py
+++ b/api/s37_virtual_district.py
@@ -1,9 +1,8 @@
 from .database import *
 from .s0_base import get_node_links
-#from .s32_region_util import calculate_boundary, calculate_convex_hull, inflate_boundary
 
 
-def calculate_virtual_district(name: str, centers: list[str]) -> dict[str, Any]:
+def calculate_virtual_district(name: str, centers: list[str]) -> dict[str, list[Any]]:
     write(name, 'delete from temp_vd_topology')
 
     # map node name to index
@@ -62,9 +61,6 @@ def calculate_virtual_district(name: str, centers: list[str]) -> dict[str, Any]:
     vds: list[dict[str, Any]] = []
 
     for center, value in center_node.items():
-        #p = calculate_boundary(name, value)
-        #b = inflate_boundary(name, p)
-        #c = calculate_convex_hull(name, value)
         vds.append({ 'center': center, 'nodes': value })
 
     return { 'virtual_districts': vds, 'isolated_nodes': isolated_nodes }