user: You are a structured reasoning expert tasked with solving problems step by step. 
You first think about the reasoning process in the mind and then provide the answer. The reasoning process and answer should be enclosed within <think> </think> and <answer> </answer> tags, respectively, i.e., <think> reasoning process here </think> <answer> answer here </answer>. 
Given a question and the associated knowledge graph triplets (entity, relation, entity), you are asked to answer the question with these triplets and your own knowledge. 
You can break down the original question into several sub-questions and explore the given knowledge graph to solve them step-by-step. If there are multiple possible answers, choose one as the final answer. 
After thinking, when you finally reach a conclusion, clearly state the answer within <answer> </answer> tags, i.e., <answer> answer here </answer>. 
Question: who was charlemagne 's wife? 
Knowledge Triplets: Charlemagne, opera.opera_character.operas_appears_in, m.0hzjw3j
Charlemagne, people.person.children, Bertha, daughter of Charlemagne
Carolingian Dynasty, symbols.namesake.named_after, Charlemagne
Charlemagne, organization.organization_founder.organizations_founded, Gymnasium Carolinum
Gisela, daughter of Charlemagne, freebase.valuenotation.is_reviewed, Gender
Charlemagne, book.book_character.appears_in_book, The Song of Roland
m.07mpp4h, people.marriage.spouse, Luitgard
Louis the Pious, people.person.parents, Hildegard of the Vinzgau
Charlemagne, base.kwebbase.kwtopic.has_sentences, Among the most important was the great Anglo-Saxon scholar Alcuin.
Charlemagne, common.topic.article, m.01mhp
Richbod, Abbott of Saint-Riquier, people.person.parents, Charlemagne
Bertha, daughter of Charlemagne, people.person.parents, Hildegard of the Vinzgau
Theodrada, people.person.parents, Charlemagne
Hiltrude, people.person.parents, Charlemagne
Charles, common.topic.notable_for, g.125fgwrcn
m.0hzjw3p, opera.opera_character_voice.character, Charlemagne
Carolingian Dynasty, people.family.members, Louis V of France
Theodoric, son of Charlemagne, people.person.gender, Male
The Coronation of Charlemagne, common.topic.article, m.0260tg5
Francia, common.topic.article, m.01s5vv
m.03z5z1_, visual_art.artwork_location_relationship.artwork, The Coronation of Charlemagne
The Coronation of Charlemagne, visual_art.artwork.owners, m.0c3lf_b
Charlemagne, freebase.valuenotation.is_reviewed, Date of death
Amaudru, people.person.parents, Charlemagne
m.07mpp4z, people.marriage.spouse, Fastrada
m.0j4kck5, people.marriage.spouse, Judith of Bavaria
Theodoric, son of Charlemagne, freebase.valuenotation.is_reviewed, Date of birth
Charlemagne, freebase.valuenotation.is_reviewed, Place of death
Otto III, Holy Roman Emperor, people.deceased_person.place_of_burial, Aachen Cathedral
Charlemagne and Pippin the Hunchback. 10th century copy of a lost original from about 830, common.image.appears_in_topic_gallery, Charlemagne
Louis the Pious, people.person.children, Gisela, daughter of Louis the Pious
Louis the Pious, people.person.children, Charles the Bald, Holy Roman Emperor
Carolingian Dynasty, people.family.members, Lothair of France
m.07mpp4h, people.person.spouse_s, Luitgard
Image-Charlemagne-by-Durer, common.image.size, m.02bclwr
Lothair of France, people.family_member.family, Carolingian Dynasty
Hildegard of the Vinzgau, people.person.children, Bertha, daughter of Charlemagne
Otto III, Holy Roman Emperor, people.person.religion, Catholicism
Equestrian statuette of Charlemagne or Charles the Bald, common.topic.webpage, m.05bqfbn
m.07mpp4z, people.marriage.spouse, Charlemagne
Nathalie Kosciusko-Morizet, people.person.place_of_birth, Paris
Carolingian Dynasty, people.family.members, Adelaide of Paris
Louis the Pious, people.person.children, Pepin I of Aquitaine
Louis IV of France, people.person.gender, Male
Adaltrude, common.topic.notable_for, g.12h2w_31g
Aachen Cathedral, people.place_of_interment.interred_here, Charlemagne
Aachen Cathedral, location.location.containedby, Germany
Charlemagne, common.topic.notable_types, Monarch
Charlemagne, people.person.children, Theodrada
Date of death, freebase.valuenotation.is_reviewed, Luitgard
Pepin of Italy, people.person.parents, Charlemagne
Equestrian statuette of Charlemagne or Charles the Bald, visual_art.artwork.art_form, Sculpture
Aachen Cathedral, people.place_of_interment.interred_here, Otto III, Holy Roman Emperor
Theodoric, son of Charlemagne, freebase.valuenotation.has_value, Place of death
Carolingian Dynasty, people.family.members, Louis the German
m.03w5qdm, government.government_position_held.office_holder, Charlemagne
Charlemagne, people.person.parents, Pepin the Short
Louis the Pious, people.person.place_of_birth, Chasseneuil-du-Poitou
Charlemagne, base.kwebbase.kwtopic.has_sentences, He also established a centralized court, over which he ruled and administered justice throughout his empire.
Charlemagne, common.topic.notable_types, Fictional Character
Aachen, location.location.contains, Brand
Aachen, location.location.contains, Alsdorf
The Coronation of Charlemagne, common.topic.image, Le Sacre de Charlemagne par Raphaël
m.07mpp57, people.marriage.spouse, Charlemagne
Sceptre de Charles V, common.topic.webpage, m.05bt2bp
Charlemagne, fictional_universe.person_in_fiction.representations_in_fiction, Charles
Hildegard of the Vinzgau, people.person.children, Louis the Pious
Hildegard of the Vinzgau, people.person.children, Gisela, daughter of Charlemagne
Charlemagne, people.person.spouse_s, m.07mpp46
Rotrude, people.person.parents, Charlemagne
Carolingian Dynasty, people.family.members, Ermentrude of France
Stanze di Raffaello Frescoes, visual_art.art_series.artworks, The Coronation of Charlemagne
charlemagne involved in forgery regarding constantine i, base.kwebbase.kwconnection.subject, Charlemagne
m.05kgp0c, royalty.noble_title_tenure.noble_title, King of the Franks
The Coronation of Charlemagne, visual_art.artwork.belongs_to_series, Stanze di Raffaello Frescoes
Charlemagne, people.person.children, Drogo of Metz
Louis the Pious, people.person.spouse_s, m.0j4m0fy
Louis IV of France, people.person.children, Charles, Duke of Lower Lorraine
Carolingian Dynasty, people.family.members, Charles of Provence
m.0j4kck5, people.marriage.type_of_union, Marriage
Charlemagne, people.person.children, Charles the Younger
Charlemagne, people.person.children, Amaudru
The Coronation of Charlemagne, visual_art.artwork.artist, Raphael
Louis the Pious, royalty.noble_person.titles, m.05kgpp6
Charlemagne, people.person.children, Hildegarde
Gisela, daughter of Charlemagne, people.person.parents, Hildegard of the Vinzgau
Aachen, location.location.contains, Hauptstadion
Charlemagne, symbols.name_source.namesakes, Carolingian Dynasty
Luitgard, people.person.spouse_s, m.07mpp4h
Aachen, location.location.contains, g.121_jd42
Charlemagne, people.person.gender, Male
Aachen Cathedral, common.topic.notable_types, Place of worship
Bertha, daughter of Charlemagne, people.person.gender, Female
Karolus i money, common.image.appears_in_topic_gallery, Charlemagne
Adaltrude, people.person.parents, Charlemagne
Charlemagne, people.person.children, Louis the Pious
Aachen Cathedral, base.schemastaging.context_name.pronunciation, g.125_nmf48
Charlemagne, freebase.valuenotation.is_reviewed, Gender
Pepin of Italy, people.person.place_of_birth, Aachen
Charlemagne, people.person.sibling_s, m.0k6lq3q
Carolingian Dynasty, people.family.members, Louis III of France
Aachen Cathedral, people.place_of_interment.interred_here, Odo of Metz
m.03w5qd9, government.government_position_held.office_holder, Charlemagne
Pepin the Hunchback, common.topic.image, Charlemagne and Pippin the Hunchback. 10th century copy of a lost original from about 830
Aachen, location.location.events, Miss Intercontinental 2012
Aachen, common.topic.image, KaiserKarlsGymnasium
Pepin the Short, people.person.children, Charlemagne
Place of death, freebase.valuenotation.is_reviewed, Luitgard
Carolingian Dynasty, royalty.royal_line.monarchs_from_this_line, Charlemagne
constantine i fake donation by charlemagne, base.kwebbase.kwconnection.subject, Constantine the Great
Louis the German, people.person.parents, Ermengarde of Hesbaye
Aachen, location.location.contains, Aachen Cathedral
Aachen, location.location.geolocation, m.0239zz0
Drogo of Metz, people.person.parents, Charlemagne
Charlemagne, freebase.valuenotation.is_reviewed, Gender
Charlemagne, freebase.valuenotation.has_value, Date of birth
Aachen, common.topic.article, m.0qjq
Aachen, location.location.events, Siege of Aachen
Aachen, common.topic.image, Aachen City Hall (rear)
Charlemagne, fictional_universe.person_in_fiction.representations_in_fiction, Charlemagne
m.046ctvq, location.adjoining_relationship.adjoins, Aachen
Bertha, daughter of Charlemagne, freebase.valuenotation.has_value, Place of death
Battle of Crucifix Hill, time.event.locations, Aachen
Battle of Aachen, time.event.locations, Aachen
Gisela, daughter of Charlemagne, common.topic.article, m.0b9yxb
Aachen Cathedral, common.topic.notable_for, g.12558qtyt
Carolingian Dynasty, royalty.royal_line.monarchs_from_this_line, Pepin II of Aquitaine
Theodoric, son of Charlemagne, freebase.valuenotation.has_value, Date of death
m.07mppk2, people.marriage.spouse, Pepin of Italy
Louis the Pious, freebase.valuenotation.is_reviewed, Place of birth
Charlemagne, freebase.valuenotation.is_reviewed, Country of nationality
Charlemagne, visual_art.art_subject.artwork_on_the_subject, Equestrian statuette of Charlemagne or Charles the Bald
Equestrian statuette of Charlemagne or Charles the Bald, visual_art.artwork.period_or_movement, Carolingian art
The Coronation of Charlemagne, visual_art.artwork.art_genre, History painting
Charlemagne, fictional_universe.fictional_character.based_on, Charlemagne
Charlemagne, people.person.place_of_birth, Francia
Carolingian Dynasty, people.family.members, Matilda of France
Aachen, location.location.events, Battle of Aachen
Theodoric, son of Charlemagne, freebase.valuenotation.has_value, Place of birth
Lothair of France, people.person.parents, Louis IV of France
Charlemagne, people.person.children, Alpaida
Francia, royalty.system_of_nobility.titles, m.05lx8v_
Gisela, daughter of Charlemagne, common.topic.notable_types, Deceased Person
Equestrian statuette of Charlemagne or Charles the Bald, common.topic.notable_types, Artwork
Louis IV of France, royalty.monarch.royal_line, Carolingian Dynasty
Carolingian Dynasty, royalty.royal_line.monarchs_from_this_line, Pepin I of Aquitaine
m.0j4m0fy, people.marriage.type_of_union, Marriage
Image-Charlemagne-by-Durer, common.image.appears_in_topic_gallery, Imperial Regalia
Theodoric, son of Charlemagne, freebase.valuenotation.is_reviewed, Gender
Carolingian Dynasty, common.topic.image, Charlemagne denier Mayence 812 814
The Coronation of Charlemagne, common.topic.notable_for, g.1254z5mvh
Alpaida, people.person.parents, Charlemagne
Charlemagne, people.person.children, Gisela, daughter of Charlemagne
Charlemagne, people.person.spouse_s, m.07mpp4h
Gisela, daughter of Charlemagne, freebase.valuenotation.has_value, Country of nationality
m.0jvvjb8, location.administrative_division_capital_relationship.capital, Aachen
Charlemagne, government.politician.government_positions_held, m.03w5qd_
Louis the German, people.person.children, Charles the Fat
Holy Roman Empire, location.country.capital, Aachen
Bertha, daughter of Charlemagne, freebase.valuenotation.is_reviewed, Gender
Charles also transformed his kingdom by a variety of measures to improve both its physical and institutional infrastructure., base.kwebbase.kwsentence.kwtopic, Charlemagne
The Coronation of Charlemagne, common.topic.notable_types, Artwork
Lothair of France, people.person.children, Louis V of France
Louis IV of France, people.family_member.family, Carolingian Dynasty
Gisela, daughter of Charlemagne, freebase.valuenotation.has_value, Place of death
m.05kgp2f, people.marriage.type_of_union, Marriage
m.05bqfbn, common.webpage.topic, Equestrian statuette of Charlemagne or Charles the Bald
Country of nationality, freebase.valuenotation.has_value, Luitgard
m.05kgpp6, royalty.noble_title_tenure.noble_person, Louis the Pious
Fresco, visual_art.visual_art_form.artworks, The Coronation of Charlemagne
Aachen Cathedral, people.place_of_interment.interred_here, Lotte Brand Philip
Charlemagne and Pippin the Hunchback. 10th century copy of a lost original from about 830, common.image.size, m.02dd23y
m.0j4m0fy, people.marriage.spouse, Ermengarde of Hesbaye
Charlemagne, people.person.children, Ruodhaid
Theodrada, common.topic.notable_for, g.12552h2m7
Charlemagne, people.person.spouse_s, m.07mpp4h
Brand, location.neighborhood.neighborhood_of, Aachen
Bertrada of Laon, people.person.children, Charlemagne
Louis the Pious, people.person.parents, Charlemagne
Equestrian statuette of Charlemagne or Charles the Bald, visual_art.artwork.locations, m.05bqf4t
m.07mpp4z, people.marriage.type_of_union, Marriage
m.05gjpbv, royalty.noble_title_tenure.noble_person, Charlemagne
Sceptre de Charles V, common.topic.notable_for, g.125cb6_zh
m.07mpp57, people.marriage.type_of_union, Marriage
Bertha, daughter of Charlemagne, freebase.valuenotation.has_value, Place of birth
Gisela, daughter of Charlemagne, freebase.valuenotation.has_value, Place of birth
Bertrada of Laon, people.person.spouse_s, m.05kgp2f
Adalhaid, common.topic.notable_for, g.12590kb7w
Carolingian Dynasty, people.family.members, Adelaide, Countess of Vermandois
m.010d0ryr, people.sibling_relationship.sibling, Charlemagne
Louis IV of France, people.person.children, Lothair of France
m.07mpp4h, people.marriage.type_of_union, Marriage
Aachen, location.location.contains, g.1yxkhpbsr
Charlemagne, people.person.religion, Catholicism
m.07mpp46, people.marriage.spouse, Hildegard of the Vinzgau
Charlemagne and Pippin the Hunchback. 10th century copy of a lost original from about 830, common.image.appears_in_topic_gallery, Pepin the Hunchback
Charlemagne, royalty.noble_person.titles, m.05kgpl4
Charlemagne, base.schemastaging.context_name.pronunciation, g.125_p_zbx
Aachen, location.location.contains, New Tivoli
Magnus the Good, symbols.namesake.named_after, Charlemagne
Hildegarde, common.topic.notable_for, g.12555q1hj
m.05kgppl, royalty.noble_title_tenure.noble_title, King of the Franks
Aachen, location.location.events, Battle of Crucifix Hill
Pepin of Italy, people.person.spouse_s, m.07mppk2
Theodrada, common.topic.article, m.0f_v93
Charlemagne, people.person.spouse_s, m.07mpp4z
m.04lss10, common.webpage.topic, Aachen
The Coronation of Charlemagne, visual_art.artwork.locations, m.03z5z1_
m.05kgpky, royalty.noble_title_tenure.noble_person, Charlemagne
Desiderata of the Lombards, people.person.spouse_s, m.07mpp57
Louis the Pious, people.person.children, Louis the German
m.05kgpky, royalty.noble_title_tenure.noble_title, King of the Franks
Aachen Cathedral, people.place_of_interment.interred_here, Foillan
m.05bt2bp, common.webpage.topic, Sceptre de Charles V
Lothair of France, royalty.monarch.royal_line, Carolingian Dynasty
Theodoric, son of Charlemagne, common.topic.notable_types, Deceased Person
m.07mpp57, people.marriage.spouse, Desiderata of the Lombards
Magnus the Good, royalty.monarch.kingdom, Denmark
m.0j4kck5, people.marriage.spouse, Louis the Pious
Carolingian Dynasty, people.family.members, Louis the Stammerer
He also established a centralized court, over which he ruled and administered justice throughout his empire., base.kwebbase.kwsentence.kwtopic, Charlemagne
Equestrian statuette of Charlemagne or Charles the Bald, common.topic.article, m.05bqfl2
Charlemagne, government.politician.government_positions_held, m.03w5qdm
Gisela, daughter of Charlemagne, people.person.parents, Charlemagne
Charlemagne, freebase.valuenotation.is_reviewed, Place of death
The Coronation of Charlemagne, visual_art.artwork.art_form, Fresco
Hugh, common.topic.article, m.09n0y6
Aachen, location.location.contains, Hauptquartier
Louis IV of France, people.person.religion, Catholicism
Charlemagne, base.kwebbase.kwtopic.has_sentences, Charles also transformed his kingdom by a variety of measures to improve both its physical and institutional infrastructure.
Constantine the Great, base.kwebbase.kwtopic.connections_to, charlemagne involved in forgery regarding constantine i
m.05kgpl4, royalty.noble_title_tenure.noble_person, Charlemagne
Charlemagne, royalty.noble_person.titles, m.05gjpbv
Charlemagne, royalty.monarch.royal_line, Carolingian Dynasty
Date of birth, freebase.valuenotation.has_value, Luitgard
King of the Franks, royalty.noble_title.holders, m.05kgp0c
Carolingian Dynasty, royalty.royal_line.monarchs_from_this_line, Louis V of France
Hugh, common.topic.notable_for, g.125cbk488
m.0j4mjv4, people.marriage.spouse, Ruodhaid
Louis the Pious, people.person.children, Lothair I
Charlemagne, people.person.parents, Bertrada of Laon
Ruodhaid, common.topic.notable_for, g.125b02z31
Charlemagne, people.family_member.family, Carolingian Dynasty
Charlemagne, people.person.sibling_s, m.010d0ryr
Hugh, people.person.parents, Charlemagne
Charlemagne, people.person.children, Adalhaid
constantine i fake donation by charlemagne, base.kwebbase.kwconnection.other, Charlemagne
Louis the Pious, common.topic.image, Ludwik I Pobożny
The impetus given to learning under Charles lasted for at least a century after his death., base.kwebbase.kwsentence.kwtopic, Charlemagne
Charlemagne, common.topic.image, Karolus i money
Hiltrude, common.topic.notable_for, g.1257fr1fj
Adalhaid, people.person.parents, Charlemagne
Aachen, location.location.contains, g.121bw2d1
Theodoric, son of Charlemagne, freebase.valuenotation.has_value, Country of nationality
Gymnasium Carolinum, organization.organization.founders, Charlemagne
The Coronation of Charlemagne, visual_art.artwork.art_subject, Charlemagne
Francia, common.topic.notable_for, g.125cxtyv_
Louis IV of France, people.person.children, Matilda of France
Charlemagne, common.topic.image, Charlemagne and Pippin the Hunchback. 10th century copy of a lost original from about 830
Louis the Pious, people.person.children, Rotrude, daughter of Louis the Pious
Aachen Cathedral, common.topic.image, The Cathedral in 2005.
Carolingian Dynasty, people.family.members, Charlemagne
Charlemagne, opera.opera_character.operas_appears_in, m.0hzjw3p
Aachen, common.topic.webpage, m.04lss10
Gisela, daughter of Charlemagne, people.person.gender, Female
Charlemagne, people.deceased_person.place_of_death, Aachen
Louis the Pious, people.person.spouse_s, m.0j4kck5
Charlemagne, people.person.children, Pepin of Italy
Charles the Younger, people.person.parents, Charlemagne
Charlemagne, freebase.valuenotation.is_reviewed, Parents
Louis the German, people.person.parents, Louis the Pious
Theodoric, son of Charlemagne, common.topic.notable_for, g.1258kfd3y
m.05kgp2f, people.marriage.spouse, Bertrada of Laon
Aachen Cathedral, location.location.geolocation, m.02_slmy
Aachen Cathedral, common.topic.article, m.01fdq_
Louis the German, people.family_member.family, Carolingian Dynasty
Louis the Pious, royalty.monarch.royal_line, Carolingian Dynasty
Charlemagne, common.topic.notable_for, g.1255sg1mb
m.05kgppt, royalty.noble_title_tenure.noble_person, Louis the Pious
m.05kgppl, royalty.noble_title_tenure.noble_person, Louis the Pious
Charlemagne, freebase.valuenotation.is_reviewed, Date of death
Charlemagne, people.person.children, Hiltrude
m.07mpp4h, people.marriage.spouse, Charlemagne
m.07mpp46, people.marriage.spouse, Charlemagne
Louis the Pious, royalty.noble_person.titles, m.05kgppt
Aachen Cathedral, protected_sites.listed_site.designation_as_natural_or_cultural_site, m.02h91wd
Sceptre de Charles V, common.topic.article, m.05bt2fm
Charlemagne, base.kwebbase.kwtopic.has_sentences, The impetus given to learning under Charles lasted for at least a century after his death.
m.03w5qd_, government.government_position_held.office_holder, Charlemagne
Charlemagne, common.topic.image, Image-Charlemagne-by-Durer
Constantine the Great, base.kwebbase.kwtopic.connections_from, constantine i fake donation by charlemagne
Charlemagne, visual_art.art_subject.artwork_on_the_subject, The Coronation of Charlemagne
Charlemagne, symbols.name_source.namesakes, Magnus the Good
Charlemagne, freebase.valuenotation.has_value, Date of birth
Judith of Flanders, people.person.parents, Charles the Bald, Holy Roman Emperor
Charlemagne, people.person.children, Theodoric, son of Charlemagne
m.07mppk2, people.marriage.type_of_union, Marriage
Charlemagne, people.person.nationality, Francia
Sceptre de Charles V, visual_art.artwork.art_subject, Charlemagne
Hildegarde, people.person.parents, Charlemagne
charlemagne involved in forgery regarding constantine i, base.kwebbase.kwconnection.relation, involved in forgery regarding
Bertha, daughter of Charlemagne, common.topic.article, m.0j9l08z
Louis the Pious, common.topic.article, m.04kl8
Theodoric, son of Charlemagne, people.person.parents, Charlemagne
Charlemagne, royalty.noble_person.titles, m.05kgpky
Charlemagne, base.kwebbase.kwtopic.connections_to, constantine i fake donation by charlemagne
Equestrian statuette of Charlemagne or Charles the Bald, visual_art.artwork.art_subject, Charles the Bald, Holy Roman Emperor
m.05kgp2f, people.marriage.spouse, Pepin the Short
Fastrada, people.person.spouse_s, m.07mpp4z
Pepin the Hunchback, people.person.parents, Charlemagne
Lothair I, people.person.children, Charles of Provence
Charlemagne, people.person.profession, Politician
Charlemagne, people.person.children, Adaltrude
Francia, common.topic.image, Growth of Frankish Power 481-814 AD
Louis IV of France, people.person.parents, Charles the Simple
m.02h91wd, protected_sites.natural_or_cultural_site_listing.listed_site, Aachen Cathedral
Charlemagne, common.topic.notable_for, g.1255_n3kj
Carloman of Bavaria, royalty.monarch.royal_line, Carolingian Dynasty
Bertha, daughter of Charlemagne, freebase.valuenotation.has_value, Country of nationality
Among the most important was the great Anglo-Saxon scholar Alcuin., base.kwebbase.kwsentence.kwtopic, Charlemagne
m.0k6lzhk, people.sibling_relationship.sibling, Charlemagne
Gisela, daughter of Charlemagne, freebase.valuenotation.is_reviewed, Date of death
The Coronation of Charlemagne, visual_art.artwork.art_subject, Pope Leo III
Charlemagne, common.topic.notable_for, g.126tr93w6
m.05bqf4t, visual_art.artwork_location_relationship.artwork, Equestrian statuette of Charlemagne or Charles the Bald
King of the Franks, government.government_office_or_title.category, Monarch
Charlemagne, people.person.children, Pepin the Hunchback
m.05gjrpd, royalty.noble_title_tenure.noble_person, Charlemagne
Francia, location.location.people_born_here, Charlemagne
Equestrian statuette of Charlemagne or Charles the Bald, visual_art.artwork.art_genre, Decorative arts
Ruodhaid, people.person.spouse_s, m.0j4mjv4
Louis the Pious, royalty.noble_person.titles, m.05kgppl
Aachen, location.place_with_neighborhoods.neighborhoods, Brand
Ruodhaid, common.topic.article, m.0d6nvr
Image-Charlemagne-by-Durer, common.image.appears_in_topic_gallery, Charlemagne
Gisela, daughter of Charlemagne, common.topic.notable_for, g.1259fchdb
Louis the Pious, common.topic.notable_for, g.125fht781
m.0j4mjv4, people.marriage.type_of_union, Marriage
Equestrian statuette of Charlemagne or Charles the Bald, visual_art.artwork.art_subject, Charlemagne
m.0k6lq3q, people.sibling_relationship.sibling, Charlemagne
Bertha, daughter of Charlemagne, common.topic.notable_types, Deceased Person
m.0j4m0fy, people.marriage.spouse, Louis the Pious
Charlemagne, freebase.valuenotation.has_value, Cause of death
Carolingian Dynasty, people.family.members, Louis IV of France
Charlemagne, people.person.children, Lothair
King of the Franks, royalty.noble_title.holders, m.05kgppl
He also ordered copied and preserved many texts of the classics, pagan and Christian., base.kwebbase.kwsentence.kwtopic, Charlemagne
Aachen Cathedral, people.place_of_interment.interred_here, Johann Joseph Couven
Hildegard of the Vinzgau, people.person.children, Charles the Younger
Charlemagne, government.politician.government_positions_held, m.03w5qd9
Rotrude, common.topic.notable_for, g.12551lf88
Bertha, daughter of Charlemagne, people.person.parents, Charlemagne
Francia, location.country.capital, Aachen
Alsdorf, location.location.containedby, Aachen
The Coronation of Charlemagne, freebase.valuenotation.has_value, Date Begun
m.0hzjw3j, opera.opera_character_voice.character, Charlemagne
Louis the Pious, people.person.children, Hildegard
Theodoric, son of Charlemagne, people.person.parents, Ethelind
Charlemagne, freebase.valuenotation.is_reviewed, Country of nationality
Charlemagne, base.kwebbase.kwtopic.connections_from, charlemagne involved in forgery regarding constantine i
Aachen Cathedral, location.location.containedby, Aachen
Hildegard of the Vinzgau, people.person.spouse_s, m.07mpp46
Rotrude, common.topic.article, m.0frbnw
m.07mpp46, people.marriage.type_of_union, Marriage
Charlemagne, people.deceased_person.place_of_burial, Aachen Cathedral
Charlemagne, base.kwebbase.kwtopic.has_sentences, He also ordered copied and preserved many texts of the classics, pagan and Christian.
Louis IV of France, people.person.parents, Eadgifu of Wessex
m.0c3lf_b, visual_art.artwork_owner_relationship.artwork, The Coronation of Charlemagne
Ruodhaid, people.person.parents, Charlemagne
Charlemagne, people.person.children, Rotrude
Charles, fictional_universe.fictional_character.based_on, Charlemagne
Gender, freebase.valuenotation.is_reviewed, Luitgard
Aachen, common.topic.image, Coat of arms of Aachen
Carolingian Dynasty, people.family.members, Judith of Flanders
m.0j4mjv4, people.marriage.spouse, Charles Martel
Aachen, common.topic.notable_for, g.125602t_m
Charlemagne, fictional_universe.fictional_character.gender, Male
Lothair, people.person.parents, Charlemagne
Charlemagne, people.person.spouse_s, m.07mpp57
Aachen Cathedral, people.place_of_interment.interred_here, César-Constantin-François de Hoensbroeck
Charlemagne, visual_art.art_subject.artwork_on_the_subject, Sceptre de Charles V
Pope Leo III, visual_art.art_subject.artwork_on_the_subject, The Coronation of Charlemagne
Charlemagne, people.person.children, Richbod, Abbott of Saint-Riquier
Charlemagne, people.person.children, Hugh
Equestrian statuette of Charlemagne or Charles the Bald, common.topic.notable_for, g.12582g2bb
King of the Franks, royalty.noble_title.holders, m.05kgpky
charlemagne involved in forgery regarding constantine i, base.kwebbase.kwconnection.other, Constantine the Great
Brand, location.location.containedby, Aachen
Bertha, daughter of Charlemagne, common.topic.notable_for, g.125b7fm18
Charlemagne, royalty.noble_person.titles, m.05gjrpd
Charlemagne, people.person.sibling_s, m.0k6lzhk
Aachen, location.location.adjoin_s, m.046ctvq

Answer: Luitgard