You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Pope_Paul_VI

Context:
Paul VI was concerned but not surprised by the negative reaction in Western Europe and the United States. He fully anticipated this reaction to be a temporary one: "Don't be afraid", he reportedly told Edouard Gagnon on the eve of the encyclical, "in twenty years time they'll call me a prophet." His biography on the Vatican's website notes of his reaffirmations of priestly celibacy and the traditional teaching on contraception that "[t]he controversies over these two pronouncements tended to overshadow the last years of his pontificate". Pope John Paul II later reaffirmed and expanded upon Humanae vitae with the encyclical Evangelium vitae.

Question:
To which pope can the Evangelium Vitae be attributed to?

Pope John Paul II