user: Question: What is the winner or 2nd of the race with a 2nd pos'n and a weight lighter than 8.1?
Columns: ['Result', 'Race', 'Distance', 'Weight', 'Winner or 2nd', "Pos'n"]
Types: ['text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['–', 'AJC Denham Court Hcp', '6f', 7.2, 'Killarney', '1st']
SQL:

assistant: SELECT "Winner or 2nd" FROM "Table" WHERE "Pos'n" = '2nd' AND "Weight" < 8.1;