If there is a VCPC of 75km/h (47mph) what is the VCA?
CREATE TABLE "tam_variants" (
  "vctp" text,
  "vca_155" text,
  "vctm" text,
  "vcpc" text,
  "vclc" text,
  "vcrt" text
);
SELECT "vca_155" FROM "tam_variants" WHERE "vcpc"='75km/h (47mph)';