Question: Who was the away team for the match with a home team of Citizen Team A?
SQL: SELECT "Away team" FROM "2-18880018-15" WHERE "Home team" = 'Citizen Team A';

Question: What was the score for the match with a home team of Citizen Team A?
SQL: SELECT "Score" FROM "2-18880018-15" WHERE "Home team" = 'Citizen Team A';

Question: Who was the home team in the match that had an away team of Convoy Sun Hei Team B?
SQL: SELECT "Home team" FROM "2-18880018-15" WHERE "Away team" = 'Convoy Sun Hei Team B';

Question: What time did the match with an away team of Happy Valley Team B start?
SQL: SELECT "Time" FROM "2-18880018-15" WHERE "Away team" = 'Happy Valley Team B';