Question: The 1989 Kiev International Tournament  was played at the stadium located on the slopes of which hill?

Context articles: Wembley International Tournament
2000 Rothmans International Tournament
Florent Riancho
Emmanuel Donkor
Olimpiyskiy National Sports Complex
Gifty Mensah
Soroush Eskandari
1989 Kiev International Tournament
Ashton Chen Yong Zhao
2015 J&amp;T Banka Prague Open

The Wembley International Tournament, known as the Makita International Tournament for sponsorship reasons from 1989, was an association football pre-season friendly tournament held annually in England between 1988 and 1994.
The 2000 Rothmans International Tournament was the 10th edition of the Malta (Rothmans) International Tournament.
 The final tournament was held from 6 February to 10 February 2000 at the Ta' Qali Stadium in Ta'Qali, Malta.
Florent Riancho (born 23 August 1989) is a French male badminton player.
 In 2012, he won Miami International tournament in men's doubles event, then in 2014 he became the runner-up of Hatzor International tournament in mixed doubles event.
Emmanuel Yaw Donkor (born 13 January 1994) is a Ghanaian male badminton player.
 He competed at the 2014 Commonwealth Games in Glasgow, Scotland.
 In 2016, he was the runner-up at the Rose Hill International tournament in the mixed doubles event partnered with Gifty Mensah.
 Teamed-up with Stella Amasah, they were the finalist at the 2017 Benin International tournament.
 He and Amasah also the semi-finalist at the Ivory Coast International tournament.
The Olympic National Sports Complex (also known as Olympic Stadium; Ukrainian: Національний спортивний комплекс "Олімпійський" ) is a multi-use sports and recreation facility in Kiev, Ukraine, located on the slopes of the city's central Cherepanov Hill, Pechersk Raion.
 The stadium is the premier sports venue in Ukraine and the second largest in Eastern Europe after Moscow's Luzhniki Stadium.
 The complex beside its stadium also features several other sports facilities and is designed to host the Olympic Games (the stadium hosted some football matches at the 1980 Summer Olympics).
Gifty Mensah (born 7 October 1998) is a Ghanaian badminton player.
 In 2011, she plays for Accra, compete at the Ghana Independence Day Open Championship.
 She won a gold in the women's doubles and a silver in the singles.
 At the same year, she was selected to represented her country to compete at the All-Africa Games.
 Teamed-up with Daniel Sam, they were the finalist at the 2015 Nigeria International tournament.
 In 2016, she was the runner-up at the Rose Hill International tournament in the mixed doubles event with Emmanuel Donkor, after battling with the Mauritanian Edoo and Louison.
 She also took the third place in the women's doubles event with Stella Amassah.
Soroush Eskandari Vatannejad (Persian: سروش اسکندری وطن نژاد‎ ‎ , born 6 June 1989) is an Iranian male badminton player.
 In 2014, he won the men's doubles title at the Kenya International tournament partnered with Hasan Motaghi.
 In 2015, he became the men's singles champion at the Zambia International tournament.
 He also won the men's doubles title at the South Africa International tournament partnered with Farzin Khanjani.
The 1989 Kiev International Tournament (Ukrainian: Міжнародний турнір у Києві ) was a summer association football friendly tournament that took place in Kiev, Soviet Union in 1989.
 The idea was initiated by the FC Dynamo Kyiv management and the tournament was played at the Olympic Stadium in Kiev.
 The tournament was contested by 4 teams, with semifinals and final.
Ashton Chen Yong Zhao (Chinese: 陈勇肇) (born 9 September 1989) is a male Singaporean badminton player.
 He was part of the SEA Games men's team that won silver medal in the 2007 edition and bronze medals in the 2009, 2011 editions.
 In 2012, he won the men's singles title at the Singaporean National Badminton Championships.
 At the BWF event tournaments, he has won the men's singles title at the 2007 Waikato and 2011 Smiling Fish Thailand International tournament, and in the men's doubles, he won the 2011 Maldives International tournament.
 Ashton quits the national team on 11 April 2014 after playing his final game for Singapore in the Djarum Superliga 2014 tournament.
The 2015 J&T Banka Prague Open was a professional tennis tournaments played on outdoor clay courts.
 It was the 6th edition of the tournament which was an International tournament on the 2015 WTA Tour.
 It took place at the Sparta Prague Tennis Club in Prague, Czech Republic, from 27 April to 2 May 2015.
 This was the event's first edition as a WTA International tournament.