Startup Idea : Task Lottery

Basically a lottery for which you have to be the first fulfill a task. For everybody who registered (for a small fee), at a specific time a question gets send. The more people register, the higher the reward the winner gets, plus sponsoring, and the more difficult the question. It could be for example: Whats the name of the dog of the guy who makes the only lemonade with raspberry taste in town? The guy knows about it, shuts off his phone, goes to the office and waits for the first person to arrive and ask him. In this case it has to be limited to a city to ensure equal chances, but other versions are possible: Investigative questions (who bought and cut down the city forest), funny ones (find an albino duck), etc... The motivation for the player is to have an interesting day actually doing something new and even maybe getting a reward for it. The sponsor gets known and the lottery company a share. (I think it would work, as the website who asks you questions for money worked: http://www.needaproblem.com/en/.)