updates to UN SDG scripts

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "scripts/un/sdg/sdg-dataset"]
 	path = scripts/un/sdg/sdg-dataset
 	url = https://code.officialstatistics.org/undata2/data-commons/sdg-dataset.git
+[submodule "scripts/un/sdg/sssom-mappings"]
+	path = scripts/un/sdg/sssom-mappings
+	url = https://code.officialstatistics.org/undata2/sssom-mappings.git

scripts/un/sdg/.gitattributes

@@ -1,3 +1,4 @@
 csv/* filter=lfs diff=lfs merge=lfs -text
 schema/* filter=lfs diff=lfs merge=lfs -text
 dc_generated/* filter=lfs diff=lfs merge=lfs -text
+geography/* filter=lfs diff=lfs merge=lfs -text

scripts/un/sdg/README.md

@@ -1,13 +1,19 @@
 # UN Stats Sustainable Development Goals
 
-This import includes country, city, and select region-level data from the [UN SDG Global Database](https://unstats.un.org/sdgs/dataportal). Data is read from the submodule `sdg-dataset` which is managed by UN Stats.
+This import includes data from the [UN SDG Global Database](https://unstats.un.org/sdgs/dataportal). Data is read from the submodule `sdg-dataset` which is managed by UN Stats. Geography mappings are read from the submodule `sssom-mappings` which is also managed by UN Stats.
 
 
-To generate city dcids:
+To generate place mappings:
 ```
-python3 cities.py <DATACOMMONS_API_KEY>
+python3 geography.py
 ```
-(Note: many of these cities will require manual curation, so this script likely should not be rerun.)
+Produces:
+* geography/ folder:
+  * un_places.mcf (place mcf)
+  * un_containment.mcf (place containment triples)
+  * place_mappings.csv (map of SDG code -> dcid)
+
+Note that the `place_mappings.csv` is required before running the `process.py` script.
 
 To process data and generate artifacts:
 ```
@@ -23,7 +29,9 @@ Produces:
   * unit.mcf
 * csv/ folder: 
   * [CODE].csv
-(Note that the `schema/` folder is not included in the repository but can be regenerated by running the script.)
+(Note that these folders are not included in the repository but can be regenerated by running the script.)
+
+When refreshing the data, the `geography`, `schema`, and `csv` folders might all get updated and will need to be resubmitted to g3. The corresponding TMCF file is `sdg.tmcf`.
 
 To run unit tests: 
 ```