Question: What is the number of staterooms when guests was larger than 210?
SQL: SELECT AVG("Staterooms") FROM "2-18622103-2" WHERE "Guests" > 210.0;

Question: What is the number of guests for the viking ingvar, built earlier than 1990?
SQL: SELECT AVG("Guests") FROM "2-18622103-2" WHERE "Ship name" = 'viking ingvar' AND "Year built" < 1990.0;

Question: What is the earliest year built for the ship refurbished earlier than 2013?
SQL: SELECT MIN("Year built") FROM "2-18622103-2" WHERE "Last refurbished" < 2013.0;