CREATE TABLE "1930_31_season_as_a_four_year_old" (
  "result" text,
  "race" text,
  "distance" text,
  "weight" real,
  "winner_or_2nd" text,
  "pos_n" text
);

Question: What was the distance for the winner or 2nd Waterline?
SQL: SELECT "distance" FROM "1930_31_season_as_a_four_year_old" WHERE "winner_or_2nd"='waterline';

Question: What is the result for the distance of 10f, and a winner or 2nd of Lampra?
SQL: SELECT "result" FROM "1930_31_season_as_a_four_year_old" WHERE "distance"='10f' AND "winner_or_2nd"='lampra';