In the timed games, you often encounter questions that don't seem to be completely related to the topic. (I especially notice it in Geography, because that category allows a small number of non-Geography questions in a quiz, so you can find yourself facing a question about local food, music, sports, etc. which worked when you were playing a quiz on the country, but seem strange out of context. I just live with it.) If it is especially unsuitable, then sending a correction note on the question after you finish the game is the way to bring it to the attention of the editors in that category. IO have encountered that diamondback question before, and it never particularly drew my attention, since the diamond was there.
_________________________
(Editor in Humanities, Religion, Literature and For Children)
That's all, folks!