Table: salyut_6_expeditions
Columns: expedition
crew
launch_date
flight_up
landing_date
flight_down
duration_days

Question: What station was sent on flight up and was launched on 23 July 1980 18:33:03?
SQL: SELECT "flight_up" FROM salyut_6_expeditions WHERE "launch_date" = '23 July 1980 18:33:03'

Question: Who were the crews on the flight up of Soyuz T-3?
SQL: SELECT "crew" FROM salyut_6_expeditions WHERE "flight_up" = 'Soyuz T-3'

Question: How many days were the station of Soyuz 35 in flight down were in orbit?
SQL: SELECT "duration_days" FROM salyut_6_expeditions WHERE "flight_down" = 'Soyuz 35'