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: What country with a government that included the position Tsar comprises the nationality of Nina Dobrev? 
Knowledge Triplets: The Great Imperial Crown, common.image.appears_in_topic_gallery, Tsar
m.0nfm8n_, government.government_position_held.basic_title, Emperor
Nikolai Dobrev, people.person.spouse_s, m.0ngxyyk
m.09lyy6l, film.performance.actor, Nina Dobrev
Tsar, government.government_office_or_title.category, Emperor
Nina Dobrev, award.award_nominee.award_nominations, m.0110_kv_
m.0k39tjs, government.government_position_held.office_position_or_title, Emperor of Japan
m.0nfm8pr, government.government_position_held.office_position_or_title, Emperor of All Russia
m.0bzzrcm, common.webpage.resource, Nina Dobrev Pictures
Nina Dobrev, film.actor.film, m.012zkwq6
m.09x1wgz, common.webpage.topic, Nina Dobrev
Tsar of Russia, royalty.noble_title.holders, m.05ysn2v
m.0z1f8zl, award.award_nomination.nominated_for, ninadobrev
Nina Dobrev, freebase.valuenotation.is_reviewed, Place of birth
m.0bvxzf5, tv.tv_guest_role.actor, Nina Dobrev
Nina Dobrev, film.actor.film, m.0gc6bzv
Mia Jones, common.topic.image, Nina Dobrev at PaleyFest2010
Nina Dobrev, people.person.nationality, Bulgaria
NinaDobrev08TIFF, common.image.appears_in_topic_gallery, Elena Gilbert
Nina Dobrev, people.person.profession, Model
m.0z1f8zl, award.award_nomination.award_nominee, Nina Dobrev
Nina Dobrev, tv.tv_actor.starring_roles, m.0bfmt91
Nina Dobrev, tv.tv_actor.guest_roles, m.07yjc10
m.0w17r_d, film.performance.actor, Nina Dobrev
Nina Dobrev, award.award_nominee.award_nominations, m.0yr76n8
m.0528rnq, royalty.noble_title_tenure.noble_title, Tsar of Russia
Nina Dobrev, film.actor.film, m.0gxr39l
Nina Dobrev, film.actor.film, m.0ccdft8
m.0ztqvm3, tv.tv_guest_role.actor, Nina Dobrev
Tsar of Russia, royalty.noble_title.holders, m.05ysn1d
ninadobrev, common.topic.notable_types, Blog
Nikolai Dobrev, freebase.valuenotation.has_value, Date of birth
m.0hy_q80, award.award_honor.award_winner, Nina Dobrev
m.0528rnx, royalty.noble_title_tenure.noble_title, Tsar of Russia
ninadobrev, internet.blog.blogger, Nina Dobrev
m.0z8n1zp, award.award_nomination.award_nominee, Nina Dobrev
m.0ycn9k9, award.award_honor.award_winner, Nina Dobrev
Tsaritsa, common.topic.notable_types, Noble rank
Tsar of Russia, base.descriptive_names.names.descriptive_name, m.0109979h
m.03w5qd9, government.government_position_held.basic_title, Emperor
Alexander Dobrev, freebase.valuenotation.has_value, Place of birth
Nikolai Dobrev, freebase.valuenotation.has_value, Parents
m.0nfm8nh, government.government_position_held.office_position_or_title, Emperor of All Russia
m.0ws7yxm, government.government_position_held.office_position_or_title, Tsar of Bulgaria
Tsar of Russia, royalty.noble_title.holders, m.0528rvz
Michaela Konstantinova, people.person.children, Alexander Dobrev
Tsar of Russia, royalty.noble_title.holders, m.05ysn3f
m.0gxr3bt, film.performance.actor, Nina Dobrev
Nina Dobrev, award.award_nominee.award_nominations, m.0ytcr6k
Tsar, government.government_office_category.officeholders, m.0cj5q0c
m.0nfm8pc, government.government_position_held.basic_title, Emperor
m.0gxr35p, education.education.student, Nina Dobrev
Tsar, common.topic.article, m.0btxk
Nina Dobrev, people.person.parents, Michaela Konstantinova
m.04lsjsg, film.performance.actor, Nina Dobrev
m.0nfm8n_, government.government_position_held.office_position_or_title, Emperor of All Russia
Tsar, government.government_office_category.officeholders, m.0ws7yxm
ninadobrev, internet.blog.language, English Language
Nina Dobrev, common.topic.webpage, m.09yky3b
Nina Dobrev, tv.tv_actor.guest_roles, m.0bw1b2y
Nina Dobrev, film.actor.film, m.0gxr3gm
m.0h4brtz, film.performance.actor, Nina Dobrev
m.0hj9h61, award.award_nomination.award_nominee, Nina Dobrev
m.0nfm8nw, government.government_position_held.basic_title, Emperor
m.0cj5q0c, government.government_position_held.jurisdiction_of_office, Bulgaria
Tsar, royalty.noble_rank.gender, Male
m.0yr9wyp, award.award_nomination.award_nominee, Nina Dobrev
Ian Somerhalder, freebase.valuenotation.is_reviewed, Country of nationality
Nina Dobrev, celebrities.celebrity.sexual_relationships, m.0x2_2pg
m.0gxr3f5, film.performance.actor, Nina Dobrev
Alexander Dobrev, freebase.valuenotation.has_value, Country of nationality
Bulgarian Canadian, common.topic.image, NinaDobrev08TIFF
Nina Dobrev, tv.tv_actor.guest_roles, m.0bvxzf5
m.0wj80sg, award.award_nomination.award_nominee, Nina Dobrev
Nina Dobrev, common.topic.notable_for, g.125b6c304
m.0nfm8p7, government.government_position_held.basic_title, Emperor
Nina Dobrev, film.actor.film, m.0gxr3dl
Nina Dobrev, film.actor.film, m.0gxr3cm
m.0z8lx0y, award.award_honor.award_winner, Nina Dobrev
Tsar of Russia, royalty.noble_title.holders, m.0528r31
Nikolai Dobrev, people.person.gender, Male
Tsar, common.topic.image, The inscription of Mostich
Away from Her, film.film.country, Canada
Emperor, government.government_office_category.offices, Tsar
m.010rm2hc, government.government_position_held.office_position_or_title, Emperor of Japan
Nina Dobrev, freebase.valuenotation.is_reviewed, Date of birth
Nina Dobrev, award.award_winner.awards_won, m.0yh_hzr
m.0nfm8p3, government.government_position_held.basic_title, Emperor
Tsar of Russia, royalty.noble_title.holders, m.0528rnq
Nina Dobrev, award.award_nominee.award_nominations, m.0ytdc25
m.0z8jqy7, award.award_nomination.award_nominee, Nina Dobrev
m.0c1ps19, tv.tv_guest_role.actor, Nina Dobrev
Nina Dobrev, award.award_nominee.award_nominations, m.0hj9h61
m.09klrvw, base.ontologies.ontology_instance_mapping.freebase_topic, Tsar
Tsar of Russia, royalty.noble_title.holders, m.0528r3m
m.05ysn2h, royalty.noble_title_tenure.noble_title, Tsar of Russia
Nina Dobrev, tv.tv_actor.starring_roles, m.0ljc9gs
Tsar of Russia, royalty.noble_title.holders, m.07nwt8x
Nina Dobrev, award.award_nominee.award_nominations, m.0wj80sg
Nina Dobrev, award.award_nominee.award_nominations, m.0z1f8zl
Country of nationality, type.property.schema, Person
Nina Dobrev, award.award_winner.awards_won, m.0yh_k38
m.0l1yc40, government.government_position_held.office_position_or_title, German Emperor
m.0z8gcl3, award.award_nomination.award_nominee, Nina Dobrev
m.0ccdft8, film.performance.actor, Nina Dobrev
Nina Dobrev, tv.tv_actor.guest_roles, m.0bvxw8t
m.0bzzrcm, common.webpage.topic, Nina Dobrev
m.0bvxw8t, tv.tv_guest_role.actor, Nina Dobrev
Nina Dobrev, people.person.parents, Nikolai Dobrev
m.0528qzs, royalty.noble_rank_gender_equivalence.noble_rank, Tsar
m.0110_ngd, award.award_nomination.award_nominee, Nina Dobrev
m.0wj80fz, award.award_honor.award_winner, Nina Dobrev
Tsar of Russia, royalty.noble_title.holders, m.05ysn29
Nina Dobrev, people.person.languages, English Language
Nina Dobrev, award.award_winner.awards_won, m.011cfpyp
Nina Dobrev, people.person.nationality, Canada
m.0ng_f6k, government.government_position_held.office_position_or_title, Emperor of Brazil
m.0g4nzrm, common.webpage.topic, Nina Dobrev
m.0gxr35x, film.performance.actor, Nina Dobrev
Tsar of Russia, royalty.noble_title.holders, m.0528rnj
Nina Dobrev, film.actor.film, m.09lyy6l
m.0qz9hym, people.sibling_relationship.sibling, Alexander Dobrev
Samuel of Bulgaria, people.person.nationality, First Bulgarian Empire
m.09yky3b, common.webpage.topic, Nina Dobrev
m.0z86yyd, award.award_nomination.award_nominee, Nina Dobrev
Nina Dobrev, people.person.profession, Voice Actor
m.07nwt8x, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.0528r31, royalty.noble_title_tenure.noble_title, Tsar of Russia
Nina Dobrev, freebase.valuenotation.has_no_value, Children
Tsar of Russia, base.descriptive_names.names.descriptive_name, m.010998xf
Nina Dobrev, film.actor.film, m.0gxr3bt
Nina Dobrev, tv.tv_actor.guest_roles, m.0bvvrns
Nina Dobrev, common.topic.webpage, m.0bzzrcm
Tsar of Russia, royalty.noble_title.holders, m.0528r3f
Alexander Dobrev, people.person.parents, Nikolai Dobrev
Tsar of Russia, common.topic.notable_for, g.12550b3t1
Nina Dobrev, common.topic.webpage, m.09yn2sy
m.0bw1b2y, tv.tv_guest_role.actor, Nina Dobrev
m.0bw3hy3, tv.tv_guest_role.actor, Nina Dobrev
Nina Dobrev, people.person.languages, Bulgarian Language
Nina Dobrev, award.award_nominee.award_nominations, m.0z8n1zp
m.0nfm8nr, government.government_position_held.office_position_or_title, Emperor of All Russia
Alexander Dobrev, people.person.sibling_s, m.0qz9hym
Nina Dobrev, common.topic.image, NinaDobrev08TIFF
Nina Dobrev, film.actor.film, m.04lsjsg
m.0nfm8nc, government.government_position_held.basic_title, Emperor
Nina Dobrev, award.award_nominee.award_nominations, m.0yr9wyp
Elena Gilbert, common.topic.image, NinaDobrev08TIFF
m.011jzbph, award.award_honor.award_winner, Nina Dobrev
m.0nfm8n7, government.government_position_held.office_position_or_title, Emperor of All Russia
Tsar of Bulgaria, government.government_office_or_title.office_holders, m.0ws7yxm
Emperor, royalty.noble_rank.titles_conferring_this_rank, Tsar of Russia
m.09y9s1w, common.webpage.topic, Nina Dobrev
m.0qz9hym, people.sibling_relationship.sibling, Nina Dobrev
Nina Dobrev, people.person.ethnicity, Bulgarian Canadian
m.0528rn4, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.0nfm8pc, government.government_position_held.office_position_or_title, Emperor of All Russia
Nina Dobrev, award.award_nominee.award_nominations, m.010wr3fm
m.0nfm8p3, government.government_position_held.office_position_or_title, Emperor of All Russia
Nina Dobrev, people.person.profession, Actor
Nina Dobrev, people.person.profession, Gymnast
m.0bfmt91, tv.regular_tv_appearance.actor, Nina Dobrev
Nina Dobrev, award.award_winner.awards_won, m.0hy_q80
m.0ws7yxm, government.government_position_held.basic_title, Tsar
Tsar of Russia, royalty.noble_title.holders, m.0528rnb
Nina Dobrev, common.topic.webpage, m.09ykzvn
Nina Dobrev, award.award_nominee.award_nominations, m.0z8m1kl
m.0gxr3dl, film.performance.actor, Nina Dobrev
m.0110_kv_, award.award_nomination.award_nominee, Nina Dobrev
m.0yr780x, award.long_list_nomination.nominee, Nina Dobrev
m.0bvvrns, tv.tv_guest_role.actor, Nina Dobrev
Nina Dobrev, award.award_nominee.award_nominations, m.0ndvwj5
Tsar of Russia, royalty.noble_title.holders, m.05ysn24
Nina Dobrev at PaleyFest2010, common.image.appears_in_topic_gallery, Nina Dobrev
Nina Dobrev, common.topic.webpage, m.0bnt1mp
Nina Dobrev, film.actor.film, m.0gxr35x
m.0528r3f, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.0ytdc25, award.award_nomination.award_nominee, Nina Dobrev
m.0nfm8ph, government.government_position_held.office_position_or_title, Emperor of All Russia
m.0bnt1mp, common.webpage.topic, Nina Dobrev
Nikolai Dobrev, people.person.children, Nina Dobrev
m.0nfm8nr, government.government_position_held.basic_title, Emperor
m.0gk7_y8, tv.tv_guest_role.actor, Nina Dobrev
Nina Dobrev, tv.tv_actor.guest_roles, m.0gk7_y8
m.05ysn29, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.0528r3m, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.0gxr3g7, film.performance.actor, Nina Dobrev
m.0chbczj, common.webpage.topic, Nina Dobrev
How She Move, film.film.country, Canada
Nikolai Dobrev, common.topic.notable_types, Person
m.0nfm8n7, government.government_position_held.basic_title, Emperor
Nina Dobrev, common.topic.notable_types, Celebrity
m.0nfm8nw, government.government_position_held.office_position_or_title, Emperor of All Russia
m.0528rnb, royalty.noble_title_tenure.noble_title, Tsar of Russia
Tsar of Russia, royalty.noble_title.holders, m.0528r3t
m.0nfm8pm, government.government_position_held.office_position_or_title, Emperor of All Russia
Tsaritsa, royalty.noble_rank.opposite_gender_equivalent, m.0528qzs
m.0gxr39l, film.performance.actor, Nina Dobrev
Emperor, government.government_office_category.offices, Emperor of Bulgaria
m.0z8jp5j, award.award_honor.award_winner, Nina Dobrev
m.0ws7yxm, government.government_position_held.jurisdiction_of_office, First Bulgarian Empire
Nina Dobrev, tv.tv_actor.guest_roles, m.0bw1kbq
m.0nfm8nc, government.government_position_held.office_position_or_title, Emperor of All Russia
m.0ljc9gs, tv.regular_tv_appearance.actor, Nina Dobrev
Nina Dobrev, common.topic.webpage, m.0g4nzrm
m.011cfpyp, award.award_honor.award_winner, Nina Dobrev
Nina Dobrev, common.topic.webpage, m.09ykzx0
Nina Dobrev, award.award_winner.awards_won, m.0ycn9k9
Nina Dobrev, award.award_nominee.award_nominations, m.0z86yyd
Nina Dobrev, award.long_list_nominee.long_list_nominations, m.0yr780x
m.0ngxyyk, people.marriage.spouse, Nikolai Dobrev
m.0z88d5l, award.award_nomination.award_nominee, Nina Dobrev
m.0528rp2, royalty.noble_title_tenure.noble_title, Tsar of Russia
Nina Dobrev, people.person.education, m.0gxr35p
Tsar of Russia, royalty.noble_title.holders, m.05ysn2h
Michaela Konstantinova, people.person.children, Nina Dobrev
m.0k36dc5, government.government_position_held.office_position_or_title, German Emperor
m.0gxr3gm, film.performance.actor, Nina Dobrev
m.0ywt3kk, award.award_nomination.nominated_for, ninadobrev
Nina Dobrev, award.award_nominee.award_nominations, m.0z88d5l
m.0cj5q0c, government.government_position_held.basic_title, Tsar
Nina Dobrev, award.award_nominee.award_nominations, m.0z8gcl3
Nina Dobrev Pictures, common.resource.annotations, m.0bzzrcm
Alexander Dobrev, people.person.gender, Male
Nina Dobrev, base.popstra.celebrity.dated, m.0l0wr_z
Nina Dobrev, award.award_winner.awards_won, m.0y5cwr7
Nina Dobrev, common.topic.article, m.027nwk5
Tsar of Russia, royalty.noble_title.holders, m.0528rnx
m.0nfm8pr, government.government_position_held.basic_title, Emperor
Nina Dobrev, film.actor.film, m.0w17r_d
m.0528r3t, royalty.noble_title_tenure.noble_title, Tsar of Russia
Bulgarian Canadian, people.ethnicity.people, Nina Dobrev
ninadobrev, award.award_nominated_work.award_nominations, m.0ywt3kk
Nina Dobrev, people.person.places_lived, m.0gxr35c
Computer professional, people.profession.people_with_this_profession, Nikolai Dobrev
m.0ghj6g7, tv.tv_guest_role.actor, Nina Dobrev
Nina Dobrev, people.person.nationality, Bulgaria
Tsar of Russia, common.topic.notable_types, Noble title
Nina Dobrev, internet.blogger.blog, ninadobrev
m.0nfm8nm, government.government_position_held.basic_title, Emperor
m.010pzwzw, government.government_position_held.office_position_or_title, Emperor of Ethiopia
m.0790rw5, tv.regular_tv_appearance.actor, Nina Dobrev
m.0nfm8n3, government.government_position_held.office_position_or_title, Emperor of All Russia
m.0nfm8nh, government.government_position_held.basic_title, Emperor
m.0ws7yxm, government.government_position_held.office_holder, Samuel of Bulgaria
Nikolai Dobrev, people.person.children, Alexander Dobrev
m.0528qzz, royalty.system_rank_relationship.rank, Tsar
m.05ysn2v, royalty.noble_title_tenure.noble_title, Tsar of Russia
Nikolai Dobrev, freebase.valuenotation.has_value, Country of nationality
m.04m5dd3, film.performance.actor, Nina Dobrev
Nina Dobrev, award.award_winner.awards_won, m.0zyv7xx
Nina Dobrev, film.actor.film, m.0bhdbxp
m.0nfm8n3, government.government_position_held.basic_title, Emperor
m.0yr76n8, award.award_nomination.award_nominee, Nina Dobrev
m.0ycn72j, award.award_honor.award_winner, Nina Dobrev
m.09yn2sy, common.webpage.topic, Nina Dobrev
Alexander Dobrev, people.person.parents, Michaela Konstantinova
Nina Dobrev, award.award_nominee.award_nominations, m.0ywt3kk
Tsar of Russia, royalty.noble_title.holders, m.0528rvs
m.0gc6bzv, film.performance.actor, Nina Dobrev
m.0yh_hzr, award.award_honor.award_winner, Nina Dobrev
Nina Dobrev, tv.tv_actor.guest_roles, m.0c1ps19
m.0z8d_4r, award.award_nomination.award_nominee, Nina Dobrev
Tsar of Bulgaria, government.government_office_or_title.office_holders, m.0cj5q0c
m.010rm2hc, government.government_position_held.basic_title, Emperor
Nikolai Dobrev, freebase.valuenotation.has_value, Place of birth
Nina Dobrev, award.award_winner.awards_won, m.0yh_pdz
Nina Dobrev, common.topic.image, Nina Dobrev at PaleyFest2010
Nina Dobrev of 'Vampire Diaries' on getting advice from the 'True Blood' cast, common.resource.annotations, m.09yky3b
Alexander Dobrev, common.topic.notable_types, Person
m.0nfm8pm, government.government_position_held.basic_title, Emperor
Nina Dobrev, award.award_nominee.award_nominations, m.0z8jqy7
m.0f_swlt, tv.tv_guest_role.actor, Nina Dobrev
m.0bw1kbq, tv.tv_guest_role.actor, Nina Dobrev
NinaDobrev08TIFF, common.image.appears_in_topic_gallery, Bulgarian Canadian
m.012zkwq6, film.performance.actor, Nina Dobrev
m.09ykzx0, common.webpage.topic, Nina Dobrev
Tsar of Russia, royalty.noble_title.noble_rank, Emperor
Nina Dobrev at PaleyFest2010, common.image.appears_in_topic_gallery, Mia Jones
m.02vbc2d, film.performance.actor, Nina Dobrev
NinaDobrev08TIFF, common.image.size, m.05tb9q7
Nina Dobrev, freebase.valuenotation.is_reviewed, Gender
NinaDobrev08TIFF, common.image.appears_in_topic_gallery, Nina Dobrev
Nina Dobrev, tv.tv_actor.starring_roles, m.0790rw5
Nina Dobrev, people.person.education, m.0w17rcr
m.0ywt3kk, award.award_nomination.award_nominee, Nina Dobrev
Tsar, royalty.noble_rank.used_in, m.0528qzz
m.0cj5q0c, government.governmental_jurisdiction.governing_officials, Bulgaria
m.0528rvz, royalty.noble_title_tenure.noble_title, Tsar of Russia
Alexander Dobrev, freebase.valuenotation.has_value, Date of birth
m.0bhdbxp, film.performance.actor, Nina Dobrev
Country of nationality, rdf-schema#range, Country
Nina Dobrev, tv.tv_actor.guest_roles, m.0f_swlt
m.05ysn1d, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.0yh_k38, award.award_honor.award_winner, Nina Dobrev
Tsar, base.ontologies.ontology_instance.equivalent_instances, m.09klrvw
Nina Dobrev, film.actor.film, m.0gxr3g7
Nina Dobrev, people.person.gender, Female
Nina Dobrev, common.topic.webpage, m.0chbczj
m.09wf0tv, common.webpage.topic, Nina Dobrev
Tsar, royalty.noble_rank.titles_conferring_this_rank, Tsar of Russia
m.0ndvwj5, award.award_nomination.award_nominee, Nina Dobrev
m.0gxr35c, people.place_lived.person, Nina Dobrev
Nina Dobrev, award.award_winner.awards_won, m.0z8lx0y
Nina Dobrev, tv.tv_actor.guest_roles, m.0ztqvm3
m.0z8m1kl, award.award_nomination.award_nominee, Nina Dobrev
m.0zyv7xx, award.award_honor.award_winner, Nina Dobrev
m.0467jj5, government.government_position_held.basic_title, Emperor
Nina Dobrev, film.actor.film, m.0gxr3f5
m.07yjc10, tv.tv_guest_role.actor, Nina Dobrev
Nina Dobrev, common.topic.webpage, m.09x1wgz
Nina Dobrev, film.actor.film, m.0gxr3fq
m.09yky3b, common.webpage.resource, Nina Dobrev of 'Vampire Diaries' on getting advice from the 'True Blood' cast
Tsar of Russia, royalty.noble_title.noble_rank, Tsar
Nina Dobrev, award.award_nominee.award_nominations, m.0110_ngd
m.0nfm8p7, government.government_position_held.office_position_or_title, Emperor of All Russia
Tsar, royalty.noble_rank.opposite_gender_equivalent, m.0528qzs
m.0ng_f59, government.government_position_held.office_position_or_title, Emperor of Brazil
Nina Dobrev, freebase.valuenotation.is_reviewed, Country of nationality
m.0nfm4nz, government.government_position_held.basic_title, Emperor
Nina Dobrev, award.award_winner.awards_won, m.011jzbph
Nina Dobrev, award.award_nominee.award_nominations, m.0z8d_4r
Tsar, common.topic.image, The Great Imperial Crown
Country of nationality, type.property.expected_type, Country
m.0528rvs, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.04lrmzv, film.performance.actor, Nina Dobrev
Nina Dobrev, award.award_winner.awards_won, m.0z8jp5j
m.0x2_2pg, celebrities.romantic_relationship.celebrity, Nina Dobrev
Tsar of Russia, royalty.noble_title.holders, m.0528rn4
m.0l0wr_z, base.popstra.dated.participant, Nina Dobrev
Nina Dobrev, tv.tv_actor.guest_roles, m.0ghj6g7
Nina Dobrev, people.person.sibling_s, m.0qz9hym
m.0528rnj, royalty.noble_title_tenure.noble_title, Tsar of Russia
Country of nationality, rdf-schema#domain, Person
m.010wr3fm, award.award_nomination.award_nominee, Nina Dobrev
m.0l1yc40, government.government_position_held.basic_title, Emperor
m.0nfm8m_, government.government_position_held.office_position_or_title, Emperor of All Russia
m.0nfm8m_, government.government_position_held.basic_title, Emperor
m.0gxr3cm, film.performance.actor, Nina Dobrev
m.0gxr3fq, film.performance.actor, Nina Dobrev
Nina Dobrev, film.actor.film, m.04lrmzv
Nina Dobrev, people.person.languages, French
Tsar of Russia, royalty.noble_title.holders, m.05ysmym
Tsar of Russia, royalty.noble_title.holders, m.0528rp2
Nina Dobrev, people.person.place_of_birth, Sofia
Nina Dobrev, common.topic.webpage, m.09y9s1w
m.0k39tjs, government.government_position_held.basic_title, Emperor
Nina Dobrev, award.award_winner.awards_won, m.0ycn72j
m.05ysn24, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.0y5cwr7, award.award_honor.award_winner, Nina Dobrev
Tsar, common.topic.notable_types, Noble rank
m.0nfm8nm, government.government_position_held.office_position_or_title, Emperor of All Russia
Nina Dobrev, award.award_winner.awards_won, m.0wj80fz
m.0ytcr6k, award.award_nomination.award_nominee, Nina Dobrev
m.0yh_pdz, award.award_honor.award_winner, Nina Dobrev
m.05ysn3f, royalty.noble_title_tenure.noble_title, Tsar of Russia
Nina Dobrev, film.actor.film, m.0h4brtz
ninadobrev, common.topic.notable_for, g.1yg57q3yt
Samuel of Bulgaria, government.politician.government_positions_held, m.0ws7yxm
Nina Dobrev at PaleyFest2010, common.image.size, m.0bn0t1y
Nikolai Dobrev, people.person.profession, Computer professional
Nina Dobrev, tv.tv_actor.guest_roles, m.0bw3hy3
m.09ykzvn, common.webpage.topic, Nina Dobrev
Nikolai Dobrev, common.topic.notable_for, g.1259y2rqb
Nina Dobrev, common.topic.webpage, m.09wf0tv
ninadobrev, award.award_nominated_work.award_nominations, m.0z1f8zl
m.0w17rcr, education.education.student, Nina Dobrev
Nina Dobrev, film.actor.film, m.04m5dd3
Tsar, government.government_office_category.officeholders, m.0cj5q0c
m.05ysmym, royalty.noble_title_tenure.noble_title, Tsar of Russia
m.0nfm4nz, government.government_position_held.office_position_or_title, Emperor of All Russia
m.0cj5q0c, government.government_position_held.office_position_or_title, Tsar of Bulgaria
m.0k36dc5, government.government_position_held.basic_title, Emperor
Tsar, common.topic.notable_for, g.1258p6tdk
Nina Dobrev, film.actor.film, m.02vbc2d

Answer: Bulgaria