Database: superhero
Question: Identify the weakest attribute of the Black Panther.
SQL: SELECT T3.attribute_name FROM superhero AS T1 INNER JOIN hero_attribute AS T2 ON T1.id = T2.hero_id INNER JOIN attribute AS T3 ON T2.attribute_id = T3.id WHERE T1.superhero_name = 'Black Panther' ORDER BY T2.attribute_value ASC LIMIT 1