"challenge" - key terms from Wikipedia

afc challenge	cup
celebrity chef challenge
challenge
challenge	and its prize
challenge	coin
challenge	cup
challenge	league
challenge	mode
challenge	of the gobots
challenge	of the super friends
challenge	records
challenge	stradale
challenge	winner
challenge	winners
client challenge
elimination challenge
elimination challenge	prize
european challenge	cup
facing a challenge	from republican
final challenge
grand challenge	cup
green challenge
green screen challenge
immunity challenge
immunity challenge	on day
immunity for the next challenge
immunity for this challenge
individual immunity challenge
international lawn tennis challenge
lunar lander challenge
master lock challenge
next immunity challenge
pepsi challenge
portfolio challenge
quickfire challenge
re ga ma pa challenge
red light challenge
reward challenge
reward challenge	on day
road rules challenge
rookie challenge
s challenge
scottish power challenge
scrapheap challenge
server challenge
skills challenge
solar challenge
super challenge
team challenge
won the immunity challenge