Database: superhero (difficulty: simple)
Question: Identify the heaviest superhero in J. R. R. Tolkien.
SQL: SELECT T1.superhero_name FROM superhero AS T1 INNER JOIN publisher AS T2 ON T1.publisher_id = T2.id WHERE T2.publisher_name = 'J. R. R. Tolkien' ORDER BY T1.weight_kg DESC LIMIT 1