WTA Premier tournaments

Columns: Tournament | Officially known as | City ( s ) | Country | Surface | Prize ( US $ ) | Current singles champion
Canada | Rogers Cup | Toronto / Montreal | Canada | Hard | 2,820,000 | Bianca Andreescu ( 2019 ) | Cincinnati | Western & Southern Open | Mason | United States | Hard | 2,874,299 | Madison Keys ( 2019 ) | Zhengzhou | Zhengzhou Open | Zhengzhou | China | Hard | 799,000 | Karolína Plíšková ( 2019 ) | Tokyo | Toray Pan Pacific Open | Tokyo | Japan | Hard | 799,000 | Naomi Osaka ( 2019 ) | Wuhan | Dongfeng Motor Wuhan Open | Wuhan | China | Hard | 2,746,000 | Aryna Sabalenka ( 2019 ) | Beijing | China Open | Beijing | China | Hard | 8,285,274 | Naomi Osaka ( 2019 )

Example questions:
What is the official tournament name of the WTA premier event held in Baden-Württemberg ? | Who was the champion for the WTA tournamnent held at the Khalifa International Tennis and Squash Complex ? | What is the birth year of the WTA Brisbane tournament champion ? | Which WTA premier tournament was won by the player born on 24 April 1996 ? | What type of surface was played on at a WTA tournament in the most populous city of Spain ?

Answers:
Porsche Tennis Grand Prix | Elise Mertens | 1992 | Miami Open | clay