Table: korean_tour_events
Columns: dates
tournament
location
prize_fund_krw
winner
owgr_points

Question: What is the location of the tournament with more than 6 OWGR points and Ryu Hyun-Woo as the winner?
SQL: SELECT "location" FROM korean_tour_events WHERE "owgr_points" > 6 AND "winner" = 'ryu hyun-woo'