Name the travel time for porta nolana - nola - baiano
CREATE TABLE "circumvesuviana" (
  "lines" text,
  "opening" real,
  "traction" text,
  "length" text,
  "stations" real,
  "route" text,
  "stops" real,
  "travel_time" text
);
SELECT "travel_time" FROM "circumvesuviana" WHERE "route"='Porta Nolana - Nola - Baiano';