Door into the Dark (1969) is a poetry collection by Seamus Heaney, who received the 1995 Nobel Prize in Literature. Poems include "Requiem for the Croppies", "Thatcher" and "The Wife's Tale". Heaney has been recorded reading this collection on the "Seamus Heaney Collected Poems" album. Using only the above description and what you know about the world, "Seamus Henry wrote Door into the Dark before receiving the Nobel Prize in Literature." is definitely correct, incorrect, or inconclusive? 