CREATE TABLE table_14054 ("Ship name" TEXT, "Year built" FLOAT, "Last refurbished" FLOAT, "Length" TEXT, "Crew" FLOAT, "Guests" FLOAT, "Staterooms" FLOAT, "Comments" TEXT)

What is the number of guests for the Viking Ingvar, built earlier than 1990?
SELECT AVG("Guests") FROM table_14054 WHERE "Ship name" = 'viking ingvar' AND "Year built" < '1990'
SELECT AVG("Guests") FROM "table_14054" WHERE "Ship name" = 'viking ingvar' AND "Year built" < '1990'