Table: tennis_finals_12
Columns: outcome
date
location
surface
opponent_in_final
score

Question: What is Opponent In Final, when Surface is Hard, when Location is Wellington, New Zealand, and when Date is 6 February 2000?
SQL: SELECT "opponent_in_final" FROM tennis_finals_12 WHERE "surface" = 'hard' AND "location" = 'wellington, new zealand' AND "date" = '6 february 2000'

Question: What is Surface, when Date is 2 May 1999?
SQL: SELECT "surface" FROM tennis_finals_12 WHERE "date" = '2 may 1999'