Question: If a red house is made from red bricks, a yellow house is made from yellow bricks, a purple house is made from purple bricks, a pink house is made from pink bricks, a blue house is made from blue bricks, then what is a green house made out of?
Question: An explorer is wandering about an icy mountain and finds an exciting discovery, immediately he calls his friends and says he's found the world's first man. How does he know this?