Table: atlantic_hurricane_season
Columns: year
number_of_tropical_storms
number_of_hurricanes
number_of_major_hurricanes
deaths
strongest_storm

Question: How many years saw 3 hurricanes wherein the strongest storm was level three?
SQL: SELECT COUNT("year") FROM atlantic_hurricane_season WHERE "number_of_hurricanes" = 3 AND "strongest_storm" = 'Three'