Table: chelsea_match_stats
Columns: date
round
opponent
venue
result
attendance
scorers

Question: Which opponent has a Date of 16 february 2003?
SQL: SELECT "opponent" FROM chelsea_match_stats WHERE "date" = '16 february 2003'

Question: Which date has an A venue with an Opponent of stoke city?
SQL: SELECT "date" FROM chelsea_match_stats WHERE "venue" = 'a' AND "opponent" = 'stoke city'

Question: Which opponent has a Round of r5?
SQL: SELECT "opponent" FROM chelsea_match_stats WHERE "round" = 'r5'

Question: Which Scorers have a Venue of A, and an Opponent of arsenal?
SQL: SELECT "scorers" FROM chelsea_match_stats WHERE "venue" = 'a' AND "opponent" = 'arsenal'

Question: Which Opponent has a Round of qf replay?
SQL: SELECT "opponent" FROM chelsea_match_stats WHERE "round" = 'qf replay'