user: ### NOW ANSWER:
Question: What is the average number of partners for the firm with a rank under 71, other over 77, and largest city of philadelphia?
Columns: ['Rank\u2003', 'Largest U.S. City\u2003', 'Total', 'Partners\u2003', 'Other']
Types: ['real', 'text', 'real', 'real', 'real']
Sample row: [1.0, 'Chicago', 3805.0, 714.0, 638.0]
SQL:

assistant: SELECT AVG("Partners ") FROM "Table" WHERE "Rank " < 71.0 AND "Largest U.S. City " = 'philadelphia' AND "Other" > 77.0;