What is the duration of the Expedition 20 ISS Zvezda?
CREATE TABLE table_name_40 (duration VARCHAR, spacecraft VARCHAR)
SELECT duration FROM table_name_40 WHERE spacecraft = "expedition 20 iss zvezda"
### Context: CREATE TABLE table_name_40 (duration VARCHAR, spacecraft VARCHAR) ### Question: What is the duration of the Expedition 20 ISS Zvezda? ### Answer: SELECT duration FROM table_name_40 WHERE spacecraft = "expedition 20 iss zvezda"