 
 <prompt> 1. Old people fit make their brain strong?
2. Who research group of old people?
3. Dem all from di same university?
4. How many different schools dey involved?
5. How old dem greyhairs wey dem study?
6. Wetin short-term memory fit increase reach?
7. Wetin dem old people need to do?
8. How many hours?
9. Daily or weekly?
10. The exercise need to hard?
11. Wetin e need increase, though?
12. Learning suppose dey simple or complex?
13. Wetin be new skill or motion wey fit help dem?
14. Wetin be another one? <response>: 1. Yes
2. Scientists
3. No
4. 11
5. seventy to seventy-nine
6. 40 percent
7. exercise
8. three
9. weekly
10. No
11. heart rate
12. More complex
13. yoga
14. tai-chi 