How many precincts are in the county where G. Hager received 19 (20%) votes?
CREATE TABLE "u_s_house_district_11" (
  "county" text,
  "precincts" text,
  "e_greenberg" text,
  "g_hager" text,
  "t_wyka" text
);
SELECT "precincts" FROM "u_s_house_district_11" WHERE "g_hager"='19 (20%)';