For example, the question asks "Does X happen" (often, where X happening is not controversial and nobody ever is even skeptical about it happening).
The body instead poses the actual notable claim that pertains to specifics of X happening (how often does it happen, or specific circumstances under which it happens, etc... - as opposed to whether it happens at all)
The major problems with such questions is that:
People go for the low hanging fruit and answer the question in the subject
That answer doesn't in any (or at least good) way address the real question in the body