code: def use_property(kepid, prop):
      
      try:
          prov = kicu.DATA.ix[kepid, '{}_prov'.format(prop)]
          return any([prov.startswith(s) for s in ['SPE', 'AST']])
      except KeyError:
          raise MissingStellarError('{} not in stellar table?'.format(kepid))
docs: Returns true if provenance of property is SPE or AST