CREATE TABLE "launch_history" (
  "date" text,
  "time_gmt" text,
  "serial" text,
  "apogee" text,
  "outcome" text
);

Question: What is the time (GMT) for the 4A Serial?
SQL: SELECT "time_gmt" FROM "launch_history" WHERE "serial"='4a';

Question: What is the time (GMT) for the 12A Serial?
SQL: SELECT "time_gmt" FROM "launch_history" WHERE "serial"='12a';