CREATE TABLE "coins" (
  "value" text,
  "equiv" text,
  "diameter" text,
  "weight" text,
  "composition" text
);

Question: What is the value of the coin weighing 10.5 g and made of cupronickel?
SQL: SELECT "value" FROM "coins" WHERE "composition"='cupronickel' AND "weight"='10.5 g';

Question: What is the coin with a € equivalency of 0.30 made of?
SQL: SELECT "composition" FROM "coins" WHERE "equiv"='0.30';

Question: What is the coin that weighs 3 g made of?
SQL: SELECT "composition" FROM "coins" WHERE "weight"='3 g';

Question: What is the diameter of the coin with a € equivalence of 0.60?
SQL: SELECT "diameter" FROM "coins" WHERE "equiv"='0.60';

Question: How much does the coin with a 14mm diameter weigh?
SQL: SELECT "weight" FROM "coins" WHERE "diameter"='14mm';