WIN tickets for One Direction in London via Jim

What?
Jim is giving away 1 duoticket for the first concert of the Take Me Home tour. This concert takes place in the O2 arena in London, 23 February 2013.
You can be there!
The prize includes transport, accomodation and of course the concert tickets.

How to participate?
If you want to win, you have to text 'concert' to 6651. You get a text back, asking you a question. Text the answer to the same number (6651). You get one last text, thanking you for participating.
Every text costs €0,75, so this competition costs you €3 in total.

Note
If you're Walloon and you don't understand the question, feel free to ask me :)