Table: salyut_7_eva
Columns: spacecraft
spacewalker
start_utc
end_utc
duration
comments

Question: When salyut 7 – ve-4 – eva 1 is the spacecraft, what is the duration?
SQL: SELECT "duration" FROM salyut_7_eva WHERE "spacecraft" = 'Salyut 7 – VE-4 – EVA 1'

Question: When first woman eva is the comment what is the end -utc?
SQL: SELECT "end_utc" FROM salyut_7_eva WHERE "comments" = 'First woman EVA'