(CNN) -- Veronica Campbell-Brown knows a thing or two about upsetting the odds. 

The 29-year-old Jamaican sprinter has had to overcome grinding poverty to become one of the greatest Olympians her country has ever produced. 

After being spotted running barefoot at a school sports day, Campbell-Brown burst on to the track and field scene when she won silver as part of Jamaica's 4x100 meters sprint team at the 2000 Sydney Olympics. 

That was just the start. 

She went on to win gold in the 200 meters at both the 2004 Athens and 2008 Beijing Olympics. Now she faces her toughest test at her fourth Games. 

CNN Photos: On the fringe of an Olympic dream 

If she emerges triumphant at London's Olympic Stadium in August, she will be the first person in history to win three consecutive gold medals in the distance. She is in good form too. Last year she ran the 100 meters in 10.76 seconds, the second quickest time in history. 

CNN's Human to Hero caught up with the Trelawny-born sprinter -- who hails from the same Jamaican parish that has given the world champion men's sprinter Usain Bolt -- to talk about London 2012, her rivals and why a third gold would be the icing on the cake. 

Growing up in poverty 

"I have five brothers, four sisters, so you can just imagine the competition in the house. It helped me be very competitive, strong and independent," Campbell-Brown said. 

"I used to race the boys and win. So I knew I had a special gift and should work on improving it.  QUESTIONS:

Q1:
1. 
2. 
3. 
Q2:
1. What is Veronica Campbell-Brown's nationality?
2. What is the sprinter's nationality?
3. Where is Veronica Campbell-Brown from?
Q3:
1. Did Veronica Campbell-Brown come from a small family?
2. Was Veronica Campbell-Brown raised in a small family?
3. Was xVeronica Campbell-Brown raised without many siblings?
Q4:
1. How many sisters did Veronica Campbell-Brown have?
2. How many female siblings did Veronica Campbell-Brown have?
3. How many of Veronica Campbell-Brown's siblings were girls?
Q5:
1. How many male siblings did Veronica Campbell-Brown have?
2. How many brothers did Veronica Campbell-Brown have?
3. How many of Veronica Campbell-Brown's siblings were boys?
Q6:
1. Did Veronica Campbell-Brown come from a wealthy family?
2. Did Veronica Campbell-Brown come from a rich family?
3. Was Veronica Campbell-Brown raised wealthy?
Q7:
1. Has Veronica Campbell-Brown won any medals?
2. Has Veronica Campbell-Brown received any accolades?
3. Have any awards gone to Veronica Campbell-Brown?
Q8:
1. Was 2000 a year when Veronica Campbell-Brown won medals?
2. Did Veronica Campbell-Brown win any medals in 2000?
3. Was 2000 a medal winning year for Veronica Campbell-Brown?
Q9:
1. What did Veronica Campbell-Brown win in 2000?
2. What medal went to Veronica Campbell-Brown in 2000?
3. In 2000, which medal did Veronica Campbell-Brown receive?
Q10:
1. What race won Veronica Campbell-Brown her silver medal?
2. What race did Veronica Campbell-Brown place silver in?
3. For what race was Veronica Campbell-Brown awarded the silver medal?
