Question: In Shakespeare's works before 1600, list down the title of the tragic story he had written that involved a character named "Tybalt".
SQL: SELECT DISTINCT T1.title FROM works AS T1 INNER JOIN chapters AS T2 ON T1.id = T2.work_id INNER JOIN paragraphs AS T3 ON T2.id = T3.chapter_id INNER JOIN characters AS T4 ON T3.character_id = T4.id WHERE T1.DATE < 1600 AND T1.GenreType = 'Tragedy' AND T4.CharName = 'Tybalt'