I agree, and thankfully we're dealing with mostly regional visitors to small local business/organization websites. Not a global audience. That being said, it's hard to think of a simple question, with little to no ambiguity.
Once example is for a landscaper: What is the color of healthy grass?
The answer is "green" of course, but grass is common in our region. That question would not work in a culture or region unfamiliar with "lawn grass".
