question: Who is Princess Adelaide Of Saxe-Meiningen's maternal grandmother?
context: [["Countess Adelaide of Lippe-Biesterfeld", ["Countess Adelaide of Lippe-Biesterfeld (22 June 1870 \u2013 3 September 1948) was the eldest child of Ernest II, Count of Lippe-Biesterfeld and Countess Karoline of Wartensleben."]], ["Princess Charlotte of Saxe-Meiningen", ["Princess Charlotte of Saxe- Meiningen( 11 September 1751, Frankfurt am Main, Free Imperial City of Frankfurt, Holy Roman Empire \u2013 25 April 1827, Genoa, Kingdom of Sardinia) was a member of the House of Saxe- Meiningen and a Princess of Saxe- Meiningen by birth and a member of the House of Saxe- Gotha- Altenburg and Duchess consort of Saxe- Gotha- Altenburg through her marriage to Ernest II, Duke of Saxe- Gotha- Altenburg."]], ["Princess Adelaide of Saxe-Meiningen", ["Princess Adelaide", "\"Adi\" of Saxe-Meiningen (Adelaide Erna Caroline Marie Elisabeth; later Princess Adalbert of Prussia; 16 August 1891 \u2013 25 April 1971) was a daughter of Prince Frederick John of Saxe-Meiningen and his wife Countess Adelaide of Lippe-Biesterfeld."]], ["Princess Feodora of Saxe-Meiningen (1890\u20131972)", ["Princess Feodora of Saxe-Meiningen", "(Feodora Karola Charlotte Marie Adelheid Auguste Mathilde; 29 May 1890 \u2013 12 March 1972) was the eldest child of Prince Friedrich Johann of Saxe-Meiningen, a younger son of Georg II, Duke of Saxe-Meiningen, and Countess Adelaide of Lippe-Biesterfeld, a daughter of Ernst, Count of Lippe-Biesterfeld.", "By marriage, she was known as Grand Duchess of Saxe-Weimar-Eisenach."]], ["Bernhard, Prince of Saxe-Meiningen", ["Bernhard, Prince of Saxe- Meiningen( 30 June 1901 \u2013 4 October 1984) was the head of the House of Saxe- Meiningen from 1946 until his death."]], ["Georg, Prince of Saxe-Meiningen", ["Georg, Prince of Saxe- Meiningen( 11 October 1892 \u2013 6 January 1946) was the head of the house of Saxe- Meiningen from 1941 until his death."]], ["Karl Wilhelm, Duke of Saxe-Meiningen", ["August Friedrich Karl Wilhelm, Duke of Saxe-Meiningen (Frankfurt, 19 November 1754 \u2013 Sonneberg, 21 July 1782), was a duke of Saxe-Meiningen."]], ["Friedrich Wilhelm, Duke of Saxe-Meiningen", ["Friedrich Wilhelm, Duke of Saxe- Meiningen( 16 February 1679 in Ichtershausen \u2013 10 March 1746 in Meiningen), was a duke of Saxe- Meiningen."]], ["Princess Louise Eleonore of Hohenlohe-Langenburg", ["Princess Luise Eleonore of Hohenlohe- Langenburg( 11 August 1763, in Langenburg \u2013 30 April 1837, in Meiningen) was a German regent.", "She was duchess of Saxe- Meiningen by marriage to George I, Duke of Saxe- Meiningen, and Regent of Saxe- Meiningen during the minority of her son from 1803 to 1821."]], ["Bernhard III, Duke of Saxe-Meiningen", ["Bernhard III, Duke of Saxe- Meiningen( 1 April 1851 \u2013 16 January 1928), was the last reigning duke of Saxe- Meiningen."]]]
supporting_facts: [["Princess Adelaide of Saxe-Meiningen", 1], ["Countess Adelaide of Lippe-Biesterfeld", 0]]
evidences: [["Princess Adelaide \"Adi\" of Saxe-Meiningen", "mother", "Countess Adelaide of Lippe-Biesterfeld"], ["Countess Adelaide of Lippe-Biesterfeld", "mother", "Karoline of Wartensleben"]]
answer: Karoline of Wartensleben