question: Who is the spouse of the performer of song Magnificat?
context: [["Magnificat", ["The Magnificat (Latin for \"[My soul] magnifies [the Lord]\") is a canticle, also known as the Song of Mary, the Canticle of Mary and, in the Byzantine tradition, the Ode of the Theotokos .", "It is traditionally incorporated into the liturgical services of the Catholic Church (at vespers) and of the Eastern Orthodox churches (at the morning services).", "It is one of the eight most ancient Christian hymns and perhaps the earliest Marian hymn.", "Its name comes from the incipit of the Latin version of the canticle's text.", "The text of the canticle is taken directly from the Gospel of Luke  where it is spoken by Mary upon the occasion of her Visitation to her cousin Elizabeth.", "In the narrative, after Mary greets Elizabeth, who is pregnant with John the Baptist, the latter moves within Elizabeth's womb.", "Elizabeth praises Mary for her faith (using words partially reflected in the Hail Mary), and Mary responds with what is now known as the Magnificat.", "Within the whole of Christianity, the Magnificat is most frequently recited within the Liturgy of the Hours.", "In Western Christianity, the Magnificat is most often sung or recited during the main evening prayer service:", "Vespers in the Catholic and Lutheran churches, and Evening Prayer (or Evensong) in Anglicanism.", "In Eastern Christianity, the Magnificat is usually sung at Sunday Matins.", "Among Protestant groups, the Magnificat may also be sung during worship services, especially in the Advent season during which these verses are traditionally read."]], ["Spouse of the President of the People's Republic of China", ["The Spouse of the President of the People's Republic of China, is the spouse of the President of the People's Republic of China.", "To date there have been 7 women who have been married to the Chinese president while in office."]], ["Spouse of the Prime Minister of Singapore", ["The Spouse of the Prime Minister of Singapore refers to the spouse of the head of government of Singapore, the Prime Minister.", "Since, Singapore became an internally self-governing state within the Commonwealth, the title has been occupied by women, therefore the spouse is also known as the Prime Minister's wife.", "To date, three women have held the title of the spouse of the Prime Minister of Singapore.", "Ho Ching is the spouse of the incumbent Prime Minister of Singapore, Lee Hsien Loong."]], ["Mary, mother of Jesus", ["Mary was a first-century BC Galilean Jewish woman of Nazareth, and the mother of Jesus, according to the New Testament and the Quran.", "The gospels of Matthew and Luke in the New Testament and the Quran describe Mary as a virgin.", "In Matthew and Luke she is betrothed to Joseph.", "According to Christian theology she conceived Jesus through the Holy Spirit while still a virgin.", "She accompanied Joseph to Bethlehem, where Jesus was born.", "According to Catholic and Orthodox teachings, at the end of her earthly life her body was raised directly into Heaven; this is known in the Christian West as the Assumption.", "Mary has been venerated since early Christianity, and is considered by millions to be the most meritorious saint of the religion.", "She is said to have miraculously appeared to believers many times over the centuries.", "The Eastern and Oriental Orthodox, Catholic, Anglican, and Lutheran churches believe that Mary, as mother of Jesus, is the \"Theotokos\" (Mother of God) .", "There is significant diversity in the Marian beliefs and devotional practices of major Christian traditions.", "The Catholic Church holds distinctive Marian dogmas, namely her status as the Mother of God, her Immaculate Conception, her perpetual virginity, and her Assumption into heaven.", "Many Protestants minimize Mary's role within Christianity, basing their argument on the relative brevity of biblical references.", "Mary also has the highest position in Islam among all women.", "She is mentioned in the Quran more often than in the Bible, where two of the longer chapters of the Quran are devoted to her and her family."]], ["Gertrude of Bavaria", ["Gertrude of Saxony and Bavaria( 1152/55\u20131197) was Duchess of Swabia as the spouse of Duke Frederick IV, and Queen of Denmark as the spouse of King Canute VI."]], ["Dogaressa", ["Dogaressa was the official title of the spouse of the Doge of Venice."]], ["Spouse of the Prime Minister of Malaysia", ["The Spouse of the Prime Minister of Malaysia refers to the spouse of the head of government of Malaysia, the Prime Minister.", "Since independence in 1957, the title has been occupied by women, therefore the spouse is also known as the Prime Minister's wife.", "Some commentators have tried to style prime ministers' wives as\" First Lady of Malaysia\", similar to the style of First Lady used in republics, but this is not a recognised title.", "To date, seven women have held the title of the spouse of the Prime Minister of Malaysia.", "Siti Hasmah is the spouse of the incumbent Prime Minister of Malaysia, Mahathir Mohamad."]], ["List of spouses of chief executives of Hong Kong", ["There is no official title for the spouse of the Chief Executive of Hong Kong."]], ["Spouse of the Prime Minister of Cambodia", ["The Spouse of the Prime Minister of Cambodia refers to the wife of the head of government of the Kingdom of Cambodia, the Prime Minister.", "Since 1993, 3 women have been the spouse of the Prime Minister of Cambodia.", "The title\" First Lady\" is also commonly used.", "The spouse of the current Prime Minister is Dr. Bun Rany."]], ["List of spouses of Prime Ministers of Thailand", ["The spouse of the Prime Minister of Thailand is the wife or husband of the Prime Minister of Thailand.", "The spouse of the current Prime Minister is Associate Professor Naraporn Chan- o-cha."]]]
supporting_facts: [["Magnificat", 0], ["Mary, mother of Jesus", 2]]
evidences: [["Magnificat", "performer", "Mary"], ["Mary", "spouse", "Joseph"]]
answer: Joseph