response: Got it. What about mars? It is red because of Iron Oxide.
original_response: My favorite planet is Mars because it's red. Iron oxide is what gives it red tint.
history: I'm not really a fan of the color red. Really? Have you ever seen the pale red pink or dark red burgundy shades? I have and I think pink is a really cool color, but regular red just doesn't do it for me. Maybe it is just too warm.
knowledge: Iron oxide also gives the red color to the planet Mars.