CREATE TABLE "r" (
  "player" text,
  "nationality" text,
  "jersey_number_s" real,
  "position" text,
  "years" text,
  "from" text
);

Question: What is Years, when Nationality is United States, and when Position is PG / SG?
SQL: SELECT "years" FROM "r" WHERE "nationality"='united states' AND "position"='pg / sg';

Question: What is Nationality, when Years is 1979?
SQL: SELECT "nationality" FROM "r" WHERE "years"='1979';

Question: What is From, when Player is Jackie Robinson Category:Articles With Hcards?
SQL: SELECT "from" FROM "r" WHERE "player"='jackie robinson category:articles with hcards';