Guide
Check the boundary first
A famous answer can be the wrong kind of thing. The game rejects it and leaves the clock running.
Read the condition, not just the noun
“A city that is not a capital” is two requirements. Paris satisfies the first and fails the second. “A sport played with a ball” excludes ice hockey, because a puck is not a ball. The reject message tells you which half you missed. Use the remaining seconds to switch examples, not to argue with the game.
Change example, not category
If London fails, the next try should still be a city. Jumping to a country or a landmark wastes the prompt. Keep the kind of thing fixed and change the member.