Table: uefa_cup_match_6
Columns: team_1
agg
team_2
1st_leg
2nd_leg

Question: What was the 1st leg for Team 2, Leeds United?
SQL: SELECT "1st_leg" FROM uefa_cup_match_6 WHERE "team_2" = 'leeds united'

Question: What was the 1st leg for Team 2, Slovan Liberec?
SQL: SELECT "1st_leg" FROM uefa_cup_match_6 WHERE "team_2" = 'slovan liberec'

Question: Which Team 1, has Team 2, Slovan Liberec?
SQL: SELECT "team_1" FROM uefa_cup_match_6 WHERE "team_2" = 'slovan liberec'