 
 <prompt> text: ```(CNN) -- Roger Federer fit don give up im No. 1 ranking, but di Swiss tennis star still dey on top for end-of-season supremacy wey no dey shake. 

Federer waka enta di semifinals of di $5.5 million ATP World Tour Finals on Thursday, beat in-form Spaniard David Ferrer 6-4 7-6 (7-5) for im second successive straight-sets win for Group B. 

Di 31-year-old never lose for di eight-man London showpiece since 2009, and e don win 70 matches dis year -- something wey e never achieve since 2006 when e dey at im peak. 

"Dis tournament na very special for many ways," Federer talk, wey don reach di last four for 10 of im 11 appearances. 

"I don love everywhere wey I don play over di years for di World Tour Finals. But I think dis one dey special, because e dey for London and The O2 na amazing venue. I dey happy say e go dey here for di next few years." 

Di 17-time grand slam champion give up di year-end top spot to Novak Djokovic when e decide say e no go defend im Paris title last week, afta e don push im record reach 302 weeks for top. 

Fifth-ranked Ferrer take advantage of di weakened field and shock defeats for Djokovic and No. 3 Andy Murray by winning im first Masters level tournament, afta e win for Valencia. 

1. How old be Roger Federer?
2. How many matches e don win dis year?
3. When last e lose di London showpiece?
4. When last e achieve 70 wins for one year?
5. E dey usually perform well for di London showpiece?
6. E dey happy about di venue dis year?
7. Where e go dey held?
8. How many weeks Federer spend as number one?
9. E dey ranked number one now?
10. Who dey?
11. Wetin be Federer current rank?
12. Wetin be di country wey e dey represent?
13. Which Spaniard e win against on Thursday?``` <response>: ```1. 31.
2. 70.
3. 2009.
4. 2006.
5. Yes.
6. Yes.
7. The O2.
8. 302.
9. No.
10. Novak Djokovic.
11. Fifth.
12. Switzerland.
13. David Ferrer.``` 