CREATE TABLE gas_station (location VARCHAR, Representative_Name VARCHAR, station_id VARCHAR)
CREATE TABLE station_company (company_id VARCHAR, station_id VARCHAR)
CREATE TABLE company (company_id VARCHAR, Assets_billion VARCHAR)

find the location and Representative name of the gas stations owned by the companies with top 3 Asset amounts.
SELECT T3.location, T3.Representative_Name FROM station_company AS T1 JOIN company AS T2 ON T1.company_id = T2.company_id JOIN gas_station AS T3 ON T1.station_id = T3.station_id ORDER BY T2.Assets_billion DESC LIMIT 3
SELECT "T3"."location", "T3"."Representative_Name" FROM "station_company" AS "T1" JOIN "company" AS "T2" ON "T1"."company_id" = "T2"."company_id" JOIN "gas_station" AS "T3" ON "T1"."station_id" = "T3"."station_id" ORDER BY "T2"."Assets_billion" DESC NULLS LAST LIMIT 3