 
 <prompt> text: ```(CNN) -- Defending champion Serena Williams manage beat Jelena Jankovic on Saturday to reach the final of the WTA Championships for Istanbul. 

The World No.1 bin dey work hard against her Serbian opponent for Sinan Erdem Dome, but she eventually win for three sets 6-4, 2-6, 6-4 to set up a showdown with China's Li Na for Sunday final. 

Williams start slow but she later come back to win the opening set. But Jankovic come back strong and win the second set. 

Serena come back strong for the deciding set wey she win 6-4 but Jankovic bin save three match points. 

"I dey try my best out here. I think say my body dey tire after many matches -- I think say yesterday I hit a wall. But I dey fight out here," Williams talk. 

"Honestly I dey happy say I still dey for the tournament, and I dey honoured to dey for the final again." 

Li match against Petra Kvitova no too hard as the 31-year-old beat the Czech left-hander 6-4, 6-2. 

Li don already break record as the first Chinese woman to reach the semifinals of the WTA Championships, but by beating Kvitova, she don rise to World No.3 and she be the highest ranked Asian woman for history. 

With both Li and Williams never lose for the tournament so far, the winner of Sunday match go collect Â£2,145,000 while the runner-up go get $1,090,000. 

1. Who be the defending champion?
2. Wetin be the competition wey she dey?
3. Where e happun?
4. Who she play against?
5. She win?
6. Na how many sets?
7. Dome dey from where?
8. How Williams body dey feel?
9. Wetin she talk say e be like say she hit?
10. How Williams feel about dey for the finals?
11. Who Li play against?
12. How old Li be?
13. Where her opponent dey from?
14. She be right handed?
15. Wetin Li be the first to be?
16. Wetin she dey ranked now?
17. Li & Williams suffer any loss?
18. How much the winner go collect?
19. And the runner up?
20. When the match go happun?``` <response>: ```1. Serena Williams
2. WTA Championships
3. Istanbul
4. Jelena Jankovic
5. yes
6. three
7. her Serbian opponent for Sinan Erdem Dome
8. tired
9. a wall
10. honoured
11. Petra Kvitova
12. 31
13. Czech Republic
14. no
15. first Chinese woman wey reach the semifinals of the WTA Championships
16. World No.3
17. no
18. Â£2,145,000
19. $1,090,000
20. Sunday``` 