user: Question: How many runs did Mahela Jayawardene and Thilan Samaraweera have?
Columns: ['Wicket', 'Runs', 'Batting partners', 'Batting team', 'Fielding team', 'Venue', 'Season']
Types: ['text', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1st', 415.0, 'GC Smith and Neil McKenzie', 'South Africa', 'Bangladesh', 'Chittagong', '2008']
SQL:

assistant: SELECT SUM("Runs") FROM "Table" WHERE "Batting partners" = 'Mahela Jayawardene and Thilan Samaraweera';