[["The Killing Curse is Avada Kedavra.  Only one person is known to have survived the curse - Harry Potter.", 53.0], ["The death spell in the Harry Potter Universe is, \"Avada Kadavra\". It causes instant death. It is one of the 3 Unforgivable Curses.", 17.0], ["Avada kedavra ", 6.0]]
tell me the death spell in harry potter
literature,harry potter,hogwarts