user: Question: What is Elizabeth Yarnold's nation?
Columns: ['Sport', 'Record', 'Athlete(s)', 'Nation', 'Date', 'Time']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ["Luge – men's singles", 'Start', 'Johannes Ludwig', 'Germany', '13 December 2009', 4.366]
SQL:

assistant: SELECT "Nation" FROM "Table" WHERE "Athlete(s)" = 'Elizabeth Yarnold';