I don't know the answer to this poem, but I do know that - should the sword remain in the stone - the situation seems rather hopeless whichever one you are. Unless someone - like Arthur, perhaps - comes along and frees you.
Like so many of your works, this is short but intensely captivating.

All the very best,

Ben

Loved this. A quandary I'm sure more than one person has experienced. Well done-