[{:type :query
  :selections [{:type :field
                :field-name :orders
                :args [{:arg-name :sort
                        :arg-value {:type :enum
                                    :value :descending}}]
                :selections [{:type :field
                              :field-name :sales_date
                              :args [{:arg-name :time_zone
                                      :arg-value {:type :enum
                                                  :value :utc}}]}]}]}]
