there was nothing in that riddel that gave a qlue for fire.
i have no idee how the other one found the awnser.
everything just screamed tree.
fire isn't born from the earth, it is created with heat, CO2 and fuel.
earth isn't fuel, leaves, wood, fat those are.
for fire to reach the sky, it needs to eat, the riddle didn't reverance that it required anything but drinking deep and breath.
i would addapt the entire riddle to avoid confusion, not just a single line.
otherwise the other one who gave the correct awnser can tell me what hint's he/she followed to reach the correct awsner.
and what gave away it was fire insted of tree.