CREATE TABLE table_1923 ("Township" TEXT, "County" TEXT, "Pop.  ( 2010 ) " FLOAT, "Land  (  sqmi  ) " TEXT, "Water  ( sqmi ) " TEXT, "Latitude" TEXT, "Longitude" TEXT, "GEO ID" FLOAT, "ANSI code" FLOAT)

If the longitude is -97.473110, what is the minimum geo id?
SELECT MIN("GEO ID") FROM table_1923 WHERE "Longitude" = '-97.473110'
SELECT MIN("GEO ID") FROM "table_1923" WHERE "Longitude" = '-97.473110'