Which stage took the tour through Boulogne-Billancourt?
CREATE TABLE table_name_90 (stage VARCHAR, route VARCHAR)
SELECT stage FROM table_name_90 WHERE route = "boulogne-billancourt"
### Context: CREATE TABLE table_name_90 (stage VARCHAR, route VARCHAR) ### Question: Which stage took the tour through Boulogne-Billancourt? ### Answer: SELECT stage FROM table_name_90 WHERE route = "boulogne-billancourt"