Question: Who is the wife of Holy Roman Emperor which  German royal election, 1002 held after his death 

full_context: Document 1: Otto II, Holy Roman Emperor: Otto II (955 – December 7, 983), called the Red ("Rufus"), was Holy Roman Emperor from 973 until his death in 983. A member of the Ottonian dynasty, Otto II was the youngest and sole surviving son of Otto the Great and Adelaide of Italy.
Document 2: Papal election, 1243: The election which took place around the death of Pope Gregory IX on August 22, 1241, was a particularly stressful one. There were military operations, both inside and outside the City of Rome, towns and properties were destroyed, Guelphs and Ghibellines warred against each other, and two of the cardinals were captured in battle and were held prisoner by the Emperor Frederick II. When the electoral meeting began, only ten of the twelve cardinals participated. The cardinals were tightly confined, on orders of the Senator of Rome, Matteo Rosso Orsini, and during that conclave one cardinal died. After seven weeks of deadlocked negotiations in the summer heat of Rome, the cardinals finally managed to produce the required two-thirds majority on October 25 for Cardinal Goffredo Castiglione, who chose the name Celestine IV. Pope Celestine was never crowned. It is also said that he was never consecrated, which is pointless, since he was already a bishop, and that he never issued a bull, which is contested. He died, old and ill, only seventeen days after his election, on November 10, 1241.
Document 3: Maximilian I, Holy Roman Emperor: Maximilian I (22 March 1459 – 12 January 1519) was King of the Romans (also known as King of the Germans) from 1486 and Holy Roman Emperor from 1493 until his death, though he was never crowned by the Pope, as the journey to Rome was always too risky. He was the son of Frederick III, Holy Roman Emperor, and Eleanor of Portugal. He ruled jointly with his father for the last ten years of his father's reign, from c. 1483 to 1493.
Document 4: Conrad II, Holy Roman Emperor: Conrad II (c. 990 4 June 1039), also known as Conrad the Elder and Conrad the Salic , was Emperor of the Holy Roman Empire from 1027 until his death in 1039. The founder of the Salian dynasty of emperors, Conrad also served as King of Germany from 1024, King of Italy from 1026, and King of Burgundy from 1033.
Document 5: Line of succession to the former Hessian throne: The Electorate of Hesse was abolished in 1866 when it was annexed by the Kingdom of Prussia, while the Grand Duchy of Hesse and by Rhine came to an end in 1918. Like most former German realms of the Holy Roman Empire the succession in Hessian lands was semi-Salic, with the nearest female kinswoman of the last male inheriting the crown upon extinction of the dynasty in the male line. The current pretender to both Hessian thrones is Donatus, Landgrave of Hesse, from the electoral line of the family, which inherited its claim to the grand duchy following the death of Prince Louis of Hesse and by Rhine in 1968. Donatus became head of the House of Hesse on the death of his father, Prince Moritz, in 2013. Landgrave Donatus is the titular Grand Duke and Elector of Hesse.
Document 6: Otto III, Holy Roman Emperor: Otto III (June/July 980 – 23 January 1002) was Holy Roman Emperor from 996 until his early death in 1002. A member of the Ottonian dynasty, Otto III was the only son of the Emperor Otto II and his wife Theophanu.
Document 7: Papal election, 1241: The papal election, following the death of Pope Gregory IX, from September 21 to October 25, 1241 elected Cardinal Goffredo da Castiglione as Pope Celestine IV. The election took place during the first of many protracted "sede vacantes" of the Middle Ages, and like many of them was characterized by disputes between popes and the Holy Roman Emperor. Specifically, the election took place during the war between Frederick II, Holy Roman Emperor against the Lombard League and the deceased pontiff, Pope Gregory IX, with Italy divided between pro-Papal and pro-Imperial factions known as the Guelphs and Ghibellines.
Document 8: Treaty of Merseburg: The Treaty of Merseburg of 1033 was an agreement between the Salian Holy Roman Emperor Conrad II and the Piast king of Poland Mieszko II, settling the question of Polish succession which had been contested between Mieszko and his half-brothers Bezprym, Otto, and Dietric, since the death of Bolesław I Chrobry. Poland was divided into three parts with Mieszko designated as the supreme ruler. In exchange for the Emperor's support however, Mieszko was forced to renounce the title of king, which had been acquired in 1025 by his father and give up control over Lusatia and Upper Lusatia. Soon after the treaty was concluded however, Otto died of natural causes and Mieszko prevented Dietric from assuming power in his portion of the divided Poland. Mieszko also subsequently continued to use the title of king until his death shortly after the treaty in 1034.
Document 9: German royal election, 1002: The German royal election of 1002 was the decision on the succession which was held after the death of Emperor Otto III without heirs. It was won by Duke Henry IV of Bavaria among accusations of uncustomary practices (bribery and electoral manipulation).
Document 10: Phantom time hypothesis: The phantom time hypothesis is a historical conspiracy theory asserted by Heribert Illig. First published in 1991, the hypothesis proposes a conspiracy by the Holy Roman Emperor Otto III, Pope Sylvester II, and possibly the Byzantine Emperor Constantine VII, to fabricate the Anno Domini dating system retrospectively, so that it placed them at the special year of AD 1000, and to rewrite history to legitimize Otto's claim to the Holy Roman Empire. Illig believed that this was achieved through the alteration, misrepresentation, and forgery of documentary and physical evidence. According to this scenario, the entire Carolingian period, including the figure of Charlemagne, is a fabrication,
Document 11: Prayerbook of Otto III: The Prayerbook of Otto III or Pommersfelden Prayerbook is an Ottonian illuminated manuscript, made up of 44 bound parchment folios. It was produced around 984 in Mainz for the private use of Otto III, Holy Roman Emperor, commissioned by his mother Theophanu and Archbishop Willigis. It is the only prayerbook to survive from the Ottonian era and its texts and images set out a monastic model for an ideal sovereign, making it more precisely a mirror of princes.
Document 12: Archduke Otto of Austria (1865–1906): Otto Franz Joseph Karl Ludwig Maria, Prince Imperial and Archduke of Austria, Prince Royal of Hungary and Bohemia (21 April 1865 – 1 November 1906) was the second son of Archduke Karl Ludwig of Austria (younger brother of Emperor Franz Joseph I of Austria) and his second wife, Princess Maria Annunciata of Bourbon-Two Sicilies. He was the father of Charles I of Austria, the last Emperor of Austria.
Document 13: Cross of Otto and Mathilde: The Cross of Otto and Mathilde, Otto-Mathilda Cross, or First Cross of Mathilde (German: Otto-Mathilden-Kreuz ) is a medieval "crux gemmata" (jewelled cross) processional cross in the Essen Cathedral Treasury. It was created in the late tenth century and was used on high holidays until recently. It is named after the two persons who appear on the enamel plaque below Christ: Otto I, Duke of Swabia and Bavaria and his sister, Mathilde, the abbess of the Essen Abbey. They were grandchildren of the emperor Otto I and favourites of their uncle, Otto II. The cross is one of the items which demonstrate the very close relationship between the Liudolfing royal house and Essen Abbey. Mathilde became Abbess of Essen in 973 and her brother died in 982, so the cross is assumed to have been made between those dates, or a year or two later if it had a memorial function for Otto. Like other objects in Essen made under the patronage of Mathilde, the location of the goldsmith's workshop is uncertain, but as well as Essen itself, Cologne has often been suggested, and the enamel plaque may have been made separately in Trier.
Document 14: Henry II, Holy Roman Emperor: Henry II (German: "Heinrich II" ; Italian: "Enrico II" ) (6 May 973 – 13 July 1024), also known as Saint Henry, Obl. S. B., was Holy Roman Emperor ("Romanorum Imperator") from 1014 until his death in 1024 and the last member of the Ottonian dynasty of Emperors as he had no children. The Duke of Bavaria from 995, Henry became King of Germany ("Rex Romanorum") following the sudden death of his second cousin, Emperor Otto III in 1002, was crowned King of Italy ("Rex Italiae") in 1004, and was crowned by the Pope as Emperor in 1014.
Document 15: Conrad II of Italy: Conrad II (12 February 1074 – 27 July 1101) was the Duke of Lower Lorraine (1076–87), King of Germany (1087–98) and King of Italy (1093–98). He was the second son of Holy Roman Emperor Henry IV and Bertha of Savoy, and their eldest son to reach adulthood, his older brother Henry having been born and died in the same month of August 1071. Conrad's rule in Lorraine and Germany was nominal. He spent most of his life in Italy and there he was king in fact as well as in name.
ground_truth: Theophanu.