Find the name of bank branch that provided the greatest total amount of loans.
SELECT T1.bname FROM bank AS T1 JOIN loan AS T2 ON T1.branch_id  =  T2.branch_id GROUP BY T1.bname ORDER BY sum(T2.amount) DESC LIMIT 1
SELECT T1.bname FROM bank AS T1 JOIN loan AS T2 ON T1.branch_id  =  T2.branch_id GROUP BY T1.bname ORDER BY sum(T2.amount) DESC LIMIT 1
[{'bname': 'broadway'}]