Question: Which season had an average under 28, a rank under 10, and a partner of Janja Lesar?
SQL: SELECT "Season" FROM "2-15988037-19" WHERE "Average" < 28.0 AND "Rank" < 10.0 AND "Professional Partner" = 'Janja Lesar';

Question: What is the highest season that had rank under 1?
SQL: SELECT MAX("Season") FROM "2-15988037-19" WHERE "Rank" < 1.0;

Question: Who was the professional partner in season 4?
SQL: SELECT "Professional Partner" FROM "2-15988037-19" WHERE "Season" = 4.0;