CREATE TABLE table_66573 ("State and District of Columbia" TEXT, "Obese adults" TEXT, "Overweight  ( incl. obese )  adults" TEXT, "Obese children and adolescents" TEXT, "Obesity rank" FLOAT)

What's the rank in West Virginia when the overweight adult was 66.8%?
SELECT "Obesity rank" FROM table_66573 WHERE "Overweight (incl. obese) adults" = '66.8%' AND "State and District of Columbia" = 'west virginia'
SELECT "Obesity rank" FROM "table_66573" WHERE "Overweight (incl. obese) adults" = '66.8%' AND "State and District of Columbia" = 'west virginia'