What is dardanus sulcus' lowest diameter?
CREATE TABLE table_name_7 (diameter INTEGER, name VARCHAR)
SELECT MIN(diameter) FROM table_name_7 WHERE name = "dardanus sulcus"
### Context: CREATE TABLE table_name_7 (diameter INTEGER, name VARCHAR) ### Question: What is dardanus sulcus' lowest diameter? ### Answer: SELECT MIN(diameter) FROM table_name_7 WHERE name = "dardanus sulcus"