Table: tennis_match_results_23
Columns: year
tournament
surface
round
winner
score

Question: What is the lowest Year, when Tournament is "Beijing"?
SQL: SELECT MIN("year") FROM tennis_match_results_23 WHERE "tournament" = 'beijing'

Question: What is Winner, when Year is 2013?
SQL: SELECT "winner" FROM tennis_match_results_23 WHERE "year" = 2013

Question: What is Round, when Tournament is "Paris"?
SQL: SELECT "round" FROM tennis_match_results_23 WHERE "tournament" = 'paris'

Question: What is Round, when Winner is "Ivanovic", when Year is less than 2008, and when Tournament is "Paris"?
SQL: SELECT "round" FROM tennis_match_results_23 WHERE "winner" = 'ivanovic' AND "year" < 2008 AND "tournament" = 'paris'

Question: What is Score, when Year is before 2007, and when Tournament is "Sydney"?
SQL: SELECT "score" FROM tennis_match_results_23 WHERE "year" < 2007 AND "tournament" = 'sydney'