CREATE TABLE "crystal_snowflake" (
  "year" real,
  "theme" text,
  "artist" text,
  "composition" text,
  "mintage" real,
  "issue_price" text
);

Question: What is the earliest year when the composition is 99.99% silver and the issue price is $94.95?
SQL: SELECT MIN("year") FROM "crystal_snowflake" WHERE "composition"='99.99% silver' AND "issue_price"='$94.95';

Question: What year had an issue price of $94.95 and theme of Amethyst crystal?
SQL: SELECT AVG("year") FROM "crystal_snowflake" WHERE "issue_price"='$94.95' AND "theme"='amethyst crystal';