[Celestia steps towards his darkness with a serious look completely unlike any the pony has worn here before, her wings spread and her attention entirely on him.]
Tell me -- what has no mass, yet when placed upon a pony, bears down on its wearer with the weight of an entire country?
[As his riddle is obvious, so is hers, particularly given the crown she wears.]
no subject
[Celestia steps towards his darkness with a serious look completely unlike any the pony has worn here before, her wings spread and her attention entirely on him.]
Tell me -- what has no mass, yet when placed upon a pony, bears down on its wearer with the weight of an entire country?
[As his riddle is obvious, so is hers, particularly given the crown she wears.]