user: Question: What is the sum of the lanes before heat 7 that Elizabeth Simmonds swam?
Columns: ['Heat', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [7.0, 5.0, 'Kirsty Coventry', 'Zimbabwe', '59.00']
SQL:

assistant: SELECT SUM("Lane") FROM "Table" WHERE "Heat" < 7.0 AND "Name" = 'Elizabeth Simmonds';