 
 <prompt> text: ```Use di article answer di questions.

Seoul, South Korea (CNN) -- Korean na one of di hardest languages for di world to master, but one elephant for one South Korean zoo dey make progress. 

Koshik, one 22-year-old Asian elephant don shock experts and im keepers for Everland Zoo near Seoul as e dey imitate human speech. Koshik fit talk di Korean words for "hello," "sit down," "no," "lie down" and "good." Im trainer, Kim Jong Gap, first start to realize say Koshik dey mimic am several years ago. 

""In 2004 and 2005, Kim no even know say di human voice wey e dey hear for di zoo na actually from Koshik," zoo spokesman In Kim In Cherl talk. "But for 2006, e start to realize say Koshik don dey imitate im voice and mention am to im boss." 

Why elephants get hair for their head? 

Im boss first call am "crazy." 

Koshik's remarkable actions catch di interest of one elephant vocalization expert wey dey thousands of kilometers away for di University of Vienna for Austria. 

""There was one YouTube video about Koshik vocalizing, and I no sure if e na fake, or if e na real," Dr. Angela Stoeger-Horwath talk. She travel with fellow expert Dr. Daniel Mietchen go South Korea for 2010 to test di elephant's ability. Dem record Koshik repeating certain words wey im keeper talk and then play am for native Korean speakers make dem see if dem fit recognize am. 

"It dey, for some of di sounds wey e dey make, quite astonishing for how similar dem be," Mietchen of di University of Jena for Germany talk. "For instance di word 'choa' (wey mean good) -- if you hear am immediately after wetin di keeper talk -- e dey quite similar." 

1. Wetin be one of di hardest languages to master?
2. Who dey learn am?
3. Where?
4. Which one?
5. Which one be where?
6. Wetin be di elephant name?
7. How old e be?
8. When e start?
9. Who see one video about am?
10. Wetin she be?
11. Where she dey work?
12. Wetin she do?
13. She go alone?
14. Who follow am go?
15. When?
16. Wetin dem do when dem reach there?
17. E dey actually talk?
18. Wetin e dey do?
19. Wetin be im name?
20. How dem take find di video?

Numbered answers:``` <response>: ```1. Korean
2. elephant
3. for zoo
4. Everland Zoo
5. Seoul
6. Koshik
7. 22
8. unknown
9. Dr. Angela Stoeger-Horwath
10. elephant vocalization expert
11. for University of Vienna
12. travel go South Korea
13. no
14. Dr. Daniel Mietchen
15. 2010
16. record Koshik
17. no
18. dey copy the trainer
19. Kim Jong Gap
20. for YouTube``` 