Step 1.
https://transparentgov.net/json2tree/esri/server/folderT.html?org=live_data&url=https%3A%2F%2Ftransparentgov.net%2Fdata%2Flive_data%2Flos-angeles-county-RmCCgQtiZLDCtblq-3p.json&select_folder=702&select_folder_text=County_City+%3Csup%3EFeatureServer%3C%2Fsup%3E&select_layer=0&select_layer_text=0+%26%23x21E2%3B+County_City+%3Csup%3EFeature+Layer%3Csub%3E+esriGeometryPolygon%3C%2Fsub%3E%3C%2Fsup%3E&arcgis_online_token=
Step 2.
search covina, found 2 polygon, click each,
select both,
you can download both
https://transparentgov.net/json2tree/attribute-driven/apple/select.html?url=https%3A%2F%2Fservices.arcgis.com%2FRmCCgQtiZLDCtblq%2Farcgis%2Frest%2Fservices%2FCounty_City%2FFeatureServer%2F0&layer=County_City&filter_by=cov
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.