user: ### NOW ANSWER:
Question: How many lanes have a Nationality of Iceland?
Columns: ['Rank', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 4.0, 'Aaron Peirsol', 'United States', '1:58.44']
SQL:

assistant: SELECT SUM("Lane") FROM "Table" WHERE "Nationality" = 'Iceland';