Definition: Given a passage and a question, find the answer to the question based on the passage. The answer should consist of only one word that lies in the span of only one of the sentences in the passage.
Input: Paragraph: The Lost Book of Enki : Memoirs and Prophecies of an Extraterrestrial god , 2001 , Bear & Company , ISBN 1 - 879181 - 83 - 5 The King Who Refused to Die : The Anunnaki and The Search for Immortality , 2013 , Bear & Company , ISBN 978 - 1 - 59143 - 177 - 0
Question: when was the lost book of enki written

Output:
2001