user: Question: What is the name of the plaza where the told for heavy vehicles with 2 axles is R20.50?
Columns: ['Name', 'Location', 'Light vehicle', 'Heavy vehicle (2 axles)', 'Heavy vehicle (3/4 axles)', 'Heavy vehicle (5+ axles)']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Huguenot Toll Plaza', 'Paarl', 'R27.00', 'R75.00', 'R117.00', 'R190.00']
SQL:

assistant: SELECT "Name" FROM "Table" WHERE "Heavy vehicle (2 axles)" = 'R20.50';