user: Question: What is the margin of victory for the winning score of −10 (71-65-68-70=274)?
Columns: ['Date', 'Tournament', 'Winning score', 'Margin of victory', 'Runner(s)-up']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['13 Mar 2005', 'Honda Classic', '−14 (73-69-69-63=274)', 'Playoff', 'Vijay Singh , Joe Ogilvie']
SQL:

assistant: SELECT "Margin of victory" FROM "Table" WHERE "Winning score" = '−10 (71-65-68-70=274)';