CREATE TABLE screen_mode (Graphics_mode FLOAT, Char_cells TEXT, Pixels TEXT, Hardware_colours FLOAT, used_kb FLOAT, map TEXT, Type TEXT)
CREATE TABLE phone (Company_name TEXT, Hardware_Model_name TEXT, Accreditation_type TEXT, Accreditation_level TEXT, Date TEXT, chip_model TEXT, screen_mode TEXT)
CREATE TABLE chip_model (Model_name TEXT, Launch_year FLOAT, RAM_MiB FLOAT, ROM_MiB FLOAT, Slots TEXT, WiFi TEXT, Bluetooth TEXT)

Tell me the proportion of the number of chips from different company names for the phone whose screen mode type is 'Graphics' with a pie chart.
SELECT T2.Company_name, COUNT(T2.Company_name) FROM screen_mode AS T1 JOIN phone AS T2 ON T1.Graphics_mode = T2.screen_mode WHERE T1.Type = "Graphics" GROUP BY T2.Company_name
SELECT "T2"."Company_name", COUNT("T2"."Company_name") FROM "screen_mode" AS "T1" JOIN "phone" AS "T2" ON "T1"."Graphics_mode" = "T2"."screen_mode" WHERE "Graphics" = "T1"."Type" GROUP BY "T2"."Company_name"