CREATE TABLE "m" (
  "player" text,
  "nationality" text,
  "jersey_number_s" text,
  "position" text,
  "years" text
);

Question: Who has a Jersey number of 31?
SQL: SELECT "player" FROM "m" WHERE "jersey_number_s"='31';

Question: What was the position in 1999?
SQL: SELECT "position" FROM "m" WHERE "years"='1999';