Where tower height in ft (m) is 46ft (14.0m) the focal plane is ft (m).
CREATE TABLE "list_of_lighthouses_in_the_philippines" (
  "lighthouse" text,
  "location" text,
  "province_city" text,
  "date_first_lit" text,
  "tower_height_in_ft_m" text,
  "focal_plane_in_ft_m" text,
  "current_status" text,
  "current_condition_description" text
);
SELECT "focal_plane_in_ft_m" FROM "list_of_lighthouses_in_the_philippines" WHERE "tower_height_in_ft_m"='46ft (14.0m)';