CREATE TABLE table_203_717 (id NUMBER, "number" NUMBER, "year built" NUMBER, "livery" CLOB, "current status" CLOB, "notes" CLOB)

how many cars are based on the plymouth and blackburn tramcars ?
SELECT COUNT(*) FROM table_203_717 WHERE "notes" = 'based on design elements from plymouth and blackburn tramcars'
SELECT COUNT(*) FROM "table_203_717" WHERE "notes" = 'based on design elements from plymouth and blackburn tramcars'