Table: europa_league_match_results
Columns: season
round
opponents
home_leg
away_leg
aggregate

Question: What was the home leg score against partizani tirana?
SQL: SELECT "home_leg" FROM europa_league_match_results WHERE "opponents" = 'Partizani Tirana'

Question: What round did they face fc st. gallen?
SQL: SELECT COUNT("round") FROM europa_league_match_results WHERE "opponents" = 'FC St. Gallen'

Question: What was the home leg score against fc schalke 04?
SQL: SELECT "home_leg" FROM europa_league_match_results WHERE "opponents" = 'FC Schalke 04'