user: Question: What is 1st Leg, when Team #1 is "San Lorenzo"?
Columns: ['Team #1', 'Points', 'Team #2', '1st leg', '2nd leg']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Cerro Porteño', '( a ) 3–3', 'Goiás', '2–0', '1–3']
SQL:

assistant: SELECT "1st leg" FROM "Table" WHERE "Team #1" = 'San Lorenzo';