user: ### NOW ANSWER:
Question: What was the Year to Open for the dandeung bridge?
Columns: ['Name', 'Main span metres', 'Main span feet', 'Year to open', 'Country']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['İzmit Bay Bridge', '1,550', '5,085', 2017.0, 'Turkey']
SQL:

assistant: SELECT COUNT("Year to open") FROM "Table" WHERE "Name" = 'dandeung bridge';