According to the riddle of the rosetta stone, what problem did both jean-francois champollion and sylvestre de sacy face in their attempts to decipher the writings on the rosetta stone?

is there a passage to this question if so plz take a picture

a) madame podtochina used witchcraft to make it disappear.

in act iii, scene ii, caliban, trínculo and stephano are drinking and wandering about the island. caliban asks for to steal prospero´s magic books. as a consequence, they will be able to kill him and take miranda. in this way, stephano will become king, propero´s daughter will be the queen, caliban will be their servant and everyone will recover power over the island.