text: import clr
  clr.AddReference('RevitAPI')
  from Autodesk.Revit.DB import *
  
  topos = UnwrapElement(IN[0])
  booleans = list()
  for item in topos:
  	try:
  		if item.IsSiteSubRegion:
  			booleans.append(True)
  		else:
  			booleans.append(False)
  	except:
  		booleans.append(False)
  OUT = booleans