user: Question: What is the order year of OBI builder and 05.505 model that is 30 feet long?
Columns: ['Order Year', 'Builder', 'Model', 'Length (ft.)', 'Engine/Transmission']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1998', 'OBI', '05.503', '30', 'DDS 50 / Allison WB-400R6']
SQL:

assistant: SELECT "Order Year" FROM "Table" WHERE "Builder" = 'OBI' AND "Length (ft.)" = '30' AND "Model" = '05.505';