Database: superhero (difficulty: simple)
Question: Which superhero has the most durability published by J. R. R. Tolkien?
SQL: SELECT T1.superhero_name FROM superhero AS T1 INNER JOIN hero_attribute AS T2 ON T1.id = T2.hero_id INNER JOIN attribute AS T3 ON T3.id = T2.attribute_id INNER JOIN publisher AS T4 ON T4.id = T1.publisher_id WHERE T4.publisher_name = 'J. R. R. Tolkien' AND T3.attribute_name = 'Durability' ORDER BY T2.attribute_value DESC LIMIT 1