What was the lowest water(sqmi) in the county of dickey where the longitude was smaller than -98.444062?
CREATE TABLE "v" (
  "township" text,
  "county" text,
  "pop_2010" real,
  "land_sqmi" real,
  "water_sqmi" real,
  "latitude" real,
  "longitude" real,
  "geo_id" real,
  "ansi_code" real
);
SELECT MIN("water_sqmi") FROM "v" WHERE "county"='dickey' AND "longitude"<-98.444062;