Behead me once, and you behold
A pleasure ground for young and old.
Decapitate again, and you will find
I long ago preserved mankind.
Answer: Spark, park, ark.
I have used all my whole this puzzle to frame,
But if you behead me, then murder you name;
Behead me again, and not dead as supposed,
For I still live and breathe, but am much indisposed.