user: Question: What 1st leg has 52-70 as the agg.?
Columns: ['Team 1', 'Agg.', 'Team 2', '1st leg', '2nd leg']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Montpellier HB', '51-54', 'FC Barcelona-Cifec', '28-25', '23-29']
SQL:

assistant: SELECT "1st leg" FROM "Table" WHERE "Agg." = '52-70';