CREATE TABLE "current_and_notable_past_models" (
  "model" text,
  "length_over_all" text,
  "beam" text,
  "sail_area" text,
  "crew" text,
  "comments" text
);

Question: Which Comments has a Length Over All of 4.5m?
SQL: SELECT "comments" FROM "current_and_notable_past_models" WHERE "length_over_all"='4.5m';

Question: Which Crew has Comments of daggerboards. design: roy seaman?
SQL: SELECT "crew" FROM "current_and_notable_past_models" WHERE "comments"='daggerboards. design: roy seaman';

Question: Which Comments has a Model of 18sq?
SQL: SELECT "comments" FROM "current_and_notable_past_models" WHERE "model"='18sq';

Question: Which Model has Comments of curved daggerboards. design: morelli und melvin?
SQL: SELECT "model" FROM "current_and_notable_past_models" WHERE "comments"='curved daggerboards. design: morelli und melvin';

Question: Which Beam has a Model of 570?
SQL: SELECT "beam" FROM "current_and_notable_past_models" WHERE "model"='570';

Question: Which Model has a Sail Area of 24.5 m²?
SQL: SELECT "model" FROM "current_and_notable_past_models" WHERE "sail_area"='24.5 m²';