Table: tennis_match_stats_7
Columns: year
tournament
surface
round
winner
score
length
ivanovic
jankovic

Question: What year did Ivanovic win with Ivanovic greater than 4 and round of R16?
SQL: SELECT SUM("year") FROM tennis_match_stats_7 WHERE "winner" = 'ivanovic' AND "ivanovic" > 4 AND "round" = 'r16'

Question: What is the highest result for Jankovic at Indian Wells and round of SF?
SQL: SELECT MAX("jankovic") FROM tennis_match_stats_7 WHERE "round" = 'sf' AND "tournament" = 'indian wells'