user: Question: Which nation had a time of 48.38?
Columns: ['Sport', 'Record', 'Nation', 'Date', 'Time (sec.)']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Bobsleigh - two-man', 'Start', 'Switzerland', '10 Jan 2009', 4.8]
SQL:

assistant: SELECT "Nation" FROM "Table" WHERE "Time (sec.)" = 48.38;