CREATE TABLE "paris_rer_lines" (
  "line_name" text,
  "opened" real,
  "last_extension" real,
  "stations_served" real,
  "length" text,
  "average_interstation" text,
  "journeys_made_per_annum" real
);

Question: What is the average opened year of the line with 59 stations served and more than 145,000,000 journeys made per annum?
SQL: SELECT AVG("opened") FROM "paris_rer_lines" WHERE "stations_served"=59 AND "journeys_made_per_annum">'145,000,000';

Question: What is the average opened year of line e, which had their last extension before 2003?
SQL: SELECT AVG("opened") FROM "paris_rer_lines" WHERE "line_name"='line e' AND "last_extension"<2003;