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, once ruled by Ananda Mahiol, is home to the mekong river? 
Knowledge Triplets: Ananda Mahidol, people.family_member.family, Chakri Dynasty
Ratchaburi Province, location.administrative_division.country, Thailand
Cambodia, location.country.form_of_government, Unitary state
Cambodia, book.book_subject.works, Vietnam, Cambodia, Laos & the Greater Mekong
Srepok River, location.location.containedby, Asia
Ananda Mahidol, royalty.monarch.kingdom, Thailand
Prajadhipok, royalty.monarch.kingdom, Thailand
Thailand, location.country.administrative_divisions, Pattani Province
Mahidol Adulyadej, people.deceased_person.place_of_death, Bangkok
Ruak River, geography.river.basin_countries, Thailand
Thailand, location.location.partially_contains, Ruak River
Chakri Dynasty, people.family_member.family, Mahidol Adulyadej
Mekong, geography.river.origin, Lasagongma Spring
Laos, location.country.administrative_divisions, Houaphanh Province
m.0k6lzp1, people.sibling_relationship.sibling, Ananda Mahidol
Mekong, geography.body_of_water.bridges, Prek Tamak Bridge
Salavan Province, location.administrative_division.country, Laos
Chakri Dynasty, royalty.royal_line.kingdom_s_ruled, Thailand
Ananda Mahidol, people.person.parents, Srinagarindra
Thailand, location.country.capital, Bangkok
Communist state, government.form_of_government.countries, Laos
River, type.type.properties, Basin countries
Oddar Meanchey Province, location.administrative_division.country, Cambodia
Ananda Mahidol, people.person.sibling_s, m.0k6lzp1
Ruak River, location.location.partially_containedby, Myanmar
Thailand, location.location.partially_contains, Kok River
Cambodia, location.location.containedby, Asia
Mekong, location.location.partially_containedby, Laos
Mahidol Adulyadej, people.family.members, Chakri Dynasty
Laos, location.country.administrative_divisions, Luang Prabang Province
House of Mahidol, common.topic.notable_types, Family
Sepon River, location.location.partially_containedby, Vietnam
Khammouane Province, location.administrative_division.country, Laos
Thailand, location.country.form_of_government, Unitary state
Cambodia, location.country.administrative_divisions, Oddar Meanchey Province
Norodom Suramarit, royalty.monarch.kingdom, Cambodia
Myanmar, location.location.partially_contains, Ruak River
Cambodia, location.country.administrative_divisions, Kampong Cham Province
Salween River, location.location.containedby, Asia
Mahidol Adulyadej, people.person.children, Ananda Mahidol
Vietnam, location.location.partially_contains, Ma River
Thailand, location.country.administrative_divisions, Suphan Buri Province
Phnom Penh, location.location.contains, Cambodian Mekong University campus
Ma River, common.topic.notable_types, River
Cambodia, location.location.partially_contains, Srepok River
Ananda Mahidol, people.person.gender, Male
Oudomxay Province, location.administrative_division.country, Laos
Ananda Mahidol, people.person.education, m.0w366k4
Mahidol Adulyadej, people.person.children, Bhumibol Adulyadej
Vietnam, Cambodia, Laos & the Greater Mekong, book.written_work.subjects, Mekong
Thailand, location.country.administrative_divisions, Nonthaburi Province
Laos, location.country.administrative_divisions, Attapeu Province
Thailand, location.country.form_of_government, Constitutional monarchy
Thailand, location.country.administrative_divisions, Ratchaburi Province
Vietnam, Cambodia, Laos & the Greater Mekong, common.topic.notable_types, Guidebook
Cambodia, location.country.capital, Phnom Penh
Salween River, location.location.partially_containedby, China
River, common.topic.article, m.021y5gc
Ananda Mahidol, royalty.monarch.kingdom, Thailand
Thailand, location.country.administrative_divisions, Phra Nakhon Si Ayutthaya Province
Mekong, travel.travel_destination.tourist_attractions, Adventures by Disney - Cambodia, Vietnam & Laos Vacation
Kok River, location.location.partially_containedby, Thailand
Ananda Mahidol, freebase.valuenotation.has_no_value, Spouse (or domestic partner)
Chakri Dynasty, people.family.country, Thailand
m.03m40vn, people.sibling_relationship.sibling, Ananda Mahidol
Champasak Province, location.administrative_division.country, Laos
Laos, base.aareas.schema.administrative_area.administrative_children, Sekong Province
Saigon River, location.location.containedby, Asia
Thailand, royalty.kingdom.rulers, Bhumibol Adulyadej
Mekong, location.location.partially_contained_by, m.0wg95k3
Ananda Mahidol, freebase.valuenotation.has_no_value, Party
Phra Nakhon Si Ayutthaya Province, location.administrative_division.country, Thailand
Thailand, government.governmental_jurisdiction.agencies, National Statistical Office of Thailand
Salween River, location.location.partially_containedby, Thailand
Maha Sarakham Province, location.administrative_division.country, Thailand
Vietnam, Cambodia, Laos & the Greater Mekong, book.written_work.subjects, Travel
House of Mahidol, people.family.members, Chulabhorn Walailak
Bassac River, geography.river.basin_countries, Cambodia
Mekong, common.topic.image, none View of the Mekong before sunset.
Adventures by Disney - Cambodia, Vietnam & Laos Vacation, travel.tourist_attraction.near_travel_destination, Mekong Delta
Mekong, location.location.partially_containedby, Thailand
Bassac River, geography.river.origin, Mekong
Mekong, location.location.contains, Khone Phapheng Falls
Laos, location.country.administrative_divisions, Xaignabouli
Thailand, royalty.kingdom.rulers, Chulalongkorn
Svay Rieng Province, location.administrative_division.country, Cambodia
Asia, base.locations.continents.countries_within, Laos
Thailand, location.country.administrative_divisions, Phetchaburi Province
m.010wskrs, government.government_position_held.office_holder, Ananda Mahidol
Kong River, common.topic.notable_types, River
Mỹ Thuận Bridge, transportation.bridge.body_of_water_spanned, Mekong
Laos, location.country.capital, Vientiane
China, location.country.administrative_divisions, Hong Kong
Cambodia, location.country.administrative_divisions, Stung Treng
Cambodia, location.country.administrative_divisions, Prey Veng Province
Srepok River, location.location.partially_containedby, Vietnam
Ananda Mahidol, common.image.appears_in_topic_gallery, Ananda Mahidol
China, location.country.form_of_government, Socialist state
Tien Giang Province, location.location.containedby, Mekong Delta
Thailand, book.book_subject.works, To Venture Further
Cambodia, location.location.partially_contains, Kong River
Xiangkhouang Province, location.administrative_division.country, Laos
Hong Kong, common.topic.notable_types, Country
Myanmar, location.location.partially_contains, Mekong
Salween River, geography.river.basin_countries, Thailand
Bolikhamsai Province, location.location.containedby, Laos
House of Mahidol, people.family.members, Srinagarindra
Ananda Mahidol, common.topic.image, Ananda Mahidol
Ma River, geography.river.basin_countries, Laos
Kampot Province, location.administrative_division.country, Cambodia
Ubon Ratchathani Province, location.administrative_division.country, Thailand
Mahidol Adulyadej, people.person.place_of_birth, Bangkok
Grand Palace, common.topic.image, Bangkok GrandPalace from River
Mekong Delta, travel.travel_destination.tour_operators, Adventures by Disney - Cambodia, Vietnam & Laos Vacation
House of Mahidol, people.family.country, Thailand
Southeast Asia, location.location.contains, Myanmar
Saigon River, location.location.partially_containedby, Cambodia
Cambodia, royalty.kingdom.rulers, Norodom Suramarit
Ma River, location.location.partially_containedby, Vietnam
Bhumibol Adulyadej, royalty.monarch.kingdom, Thailand
Thailand, location.location.partially_contains, Salween River
Cambodia, location.location.partially_contains, Mekong
Salween River, geography.river.basin_countries, China
Mahidol University, organization.organization.founders, Chulalongkorn
Vietnam, Cambodia, Laos & the Greater Mekong, book.written_work.author, Lonely Planet
Thailand, location.country.administrative_divisions, Sing Buri Province
Kampong Cham Province, location.administrative_division.country, Cambodia
Cả River, location.location.partially_containedby, Vietnam
Southeast Asia, location.location.contains, Laos
Cambodia, location.country.administrative_divisions, Kampong Chhnang Province
Battambang Province, location.administrative_division.country, Cambodia
Lam Ta Klong River, location.location.partially_containedby, Laos
Thailand, location.country.administrative_divisions, Ang Thong Province
Vietnam, Cambodia, Laos & the Greater Mekong, book.book.genre, Non-fiction
Laos, base.locations.countries.continent, Asia
Sisowath Monivong, royalty.monarch.kingdom, Cambodia
m.0wg9kc6, location.partial_containment_relationship.partially_contains, Mekong
Kong River, geography.river.basin_countries, Vietnam
Thailand, location.country.administrative_divisions, Nan Province
Hong Kong, location.country.languages_spoken, English Language
Thailand, location.country.administrative_divisions, Trat Province
Mekong, geography.river.basin_countries, Vietnam
Ananda Mahidol, people.person.education, g.11b6y8s289
Vietnam, location.location.partially_contains, Mekong
Laos, location.location.partially_contains, Sepon River
Laos, location.country.form_of_government, Communist state
Chakri Dynasty, people.family_member.family, Ananda Mahidol
Myanmar, location.country.form_of_government, Unitary state
Hong Kong, location.administrative_division.country, China
Mahidol Adulyadej, people.person.nationality, Thailand
Thailand, location.country.administrative_divisions, Bangkok
Salween River, location.location.partially_containedby, Myanmar
Myanmar, base.locations.countries.continent, Asia
Luang Namtha Province, location.administrative_division.country, Laos
Mekong, location.location.geolocation, m.0dggd0l
Srepok River, geography.river.basin_countries, Cambodia
Cambodia, location.location.partially_contains, Bassac River
Laos, location.country.administrative_divisions, Bokeo Province
none View of the Mekong before sunset., common.image.appears_in_topic_gallery, Mekong
Thailand, location.country.administrative_divisions, Surin Province
Ruak River, location.location.partially_containedby, Thailand
Cả River, location.location.partially_containedby, Laos
Cambodia, location.country.administrative_divisions, Battambang Province
Laos, freebase.valuenotation.is_reviewed, Time zone(s)
Laos, location.location.partiallycontains, m.0wg9b22
Ananda Mahidol, freebase.valuenotation.has_no_value, Children
Khone Phapheng Falls, location.location.containedby, Mekong
Cambodia, location.country.administrative_divisions, Koh Kong Province
m.0b481ts, common.webpage.topic, Mekong
Cambodia, location.country.administrative_divisions, Banteay Meanchey Province
Mahidol Adulyadej, people.person.education, m.0n0h51c
Mekong, geography.river.cities, Nong Khai
Ananda Mahidol, common.image.size, m.02c4ry0
Laos, location.location.partially_contains, Nam Sam River
Myanmar, location.location.partially_contains, Salween River
Sepon River, geography.river.basin_countries, Vietnam
Kratié Province, location.administrative_division.country, Cambodia
Laos, common.topic.subjects, Insider Journeys
Mekong Delta, travel.travel_destination.tourist_attractions, Adventures by Disney - Cambodia, Vietnam & Laos Vacation
Mekong, geography.river.cities, Ho Chi Minh City
Takéo Province, location.administrative_division.country, Cambodia
Sekong Province, base.aareas.schema.administrative_area.administrative_area_type, Province of Laos
Garçon plongeant dans le Mékong au Cambodge, common.image.appears_in_topic_gallery, Mekong
Vietnam, Cambodia, Laos & the Greater Mekong, book.written_work.subjects, Cambodia
Vietnam, Cambodia, Laos & the Greater Mekong, common.topic.notable_for, g.1258t0qcw
Hong Kong, base.biblioness.bibs_location.country, China
Laos, location.country.administrative_divisions, Vientiane Prefecture
Thailand, location.country.administrative_divisions, Phitsanulok Province
Srinagarindra, people.person.children, Ananda Mahidol
Cambodia, base.locations.countries.continent, Asia
Mekong, common.topic.image, Garçon plongeant dans le Mékong au Cambodge
Laos, location.location.partially_contains, Kong River
Prek Tamak Bridge, transportation.bridge.body_of_water_spanned, Mekong
Xiangkhouang Province, location.location.containedby, Laos
Lam Ta Klong River, geography.river.basin_countries, Thailand
Sekong Province, location.location.containedby, Laos
Mekong, common.topic.notable_for, g.12563g5fx
Thailand, location.country.administrative_divisions, Pathum Thani Province
Thailand, common.topic.webpage, m.0j1bz8t
Mekong, location.location.partially_contained_by, m.0wg9kg9
Phongsaly Province, location.location.containedby, Laos
Phongsaly Province, location.administrative_division.country, Laos
Kampong Chhnang Province, location.administrative_division.country, Cambodia
House of Mahidol, common.topic.notable_for, g.1s05s6jbp
Mahidol Adulyadej, common.topic.notable_for, g.125gwqxrz
Province of Laos, base.aareas.schema.administrative_area_type.sovereignty, Laos
Vajiravudh, royalty.monarch.kingdom, Thailand
Second Thai–Lao Friendship Bridge, transportation.bridge.body_of_water_spanned, Mekong
Srepok River, location.location.partially_containedby, Cambodia
Cambodia, location.country.administrative_divisions, Svay Rieng Province
Thailand, location.country.administrative_divisions, Phichit Province
Adventures by Disney - Cambodia, Vietnam & Laos Vacation, travel.tour_operator.travel_destinations, Mekong Delta
Thailand, royalty.kingdom.rulers, Ananda Mahidol
Ma River, geography.river.basin_countries, Vietnam
Bassac River, location.location.partially_containedby, Cambodia
Thailand, common.topic.notable_types, Country
Thailand, royalty.kingdom.rulers, Rama III
Prachuap Khiri Khan Province, location.administrative_division.country, Thailand
Nam Sam River, location.location.partially_containedby, Laos
Mekong, geography.body_of_water.bridges, Rạch Miễu Bridge
Kong River, location.location.partially_containedby, Cambodia
m.07706dh, royalty.noble_title_tenure.noble_person, Ananda Mahidol
Laos, location.location.partially_contains, Mekong
Mekong, geography.river.cities, Kampong Cham
Thailand, location.country.administrative_divisions, Mukdahan Province
Mekong Delta, location.administrative_division.country, Vietnam
Thailand, location.location.containedby, Southeast Asia
Laos, book.book_subject.works, Moon Handbooks
Kok River, location.location.partially_containedby, Myanmar
Ananda Mahidol, people.person.ethnicity, Thai people
Cambodian province, base.aareas.schema.administrative_area_type.iso_country, Cambodia
Vietnam, location.country.administrative_divisions, Mekong Delta
Mekong, geography.body_of_water.bridges, Thai–Lao Friendship Bridge
Savannakhet Province, location.administrative_division.country, Laos
Laos, book.book_subject.works, Buddhist Temple Life in Laos: Wat Lok Pa Luang
Province of Laos, base.aareas.schema.administrative_area_type.iso_country, Laos
Thai people, people.ethnicity.people, Ananda Mahidol
Thailand, location.country.administrative_divisions, Phuket Province
China, location.location.partially_contains, Salween River
Attapeu Province, location.location.containedby, Laos
Cambodia, location.country.administrative_divisions, Ratanakiri Province
Rạch Miễu Bridge, transportation.bridge.body_of_water_spanned, Mekong
Samut Sakhon Province, location.administrative_division.country, Thailand
Cambodia, location.country.administrative_divisions, Kandal Province
Hong Kong, base.locations.countries.continent, Asia
Ma River, location.location.containedby, Asia
Thailand, common.topic.webpage, m.09y2yt4
Mekong, location.location.partially_containedby, Cambodia
m.0b7cgz1, royalty.noble_title_tenure.noble_person, Ananda Mahidol
Cả River, location.location.containedby, Asia
Mekong, geography.river.basin_countries, Thailand
Ananda Mahidol, people.person.sibling_s, m.03m40vn
Cambodia, location.location.containedby, Southeast Asia
Mekong, location.location.containedby, Asia
Ananda Mahidol, people.person.place_of_birth, Heidelberg
Kok River, geography.river.basin_countries, Thailand
Cambodia, book.book_subject.works, Moon Handbooks
Laos, location.country.administrative_divisions, Champasak Province
Laos, location.country.administrative_divisions, Savannakhet Province
Mekong, geography.river.cities, Vientiane
Mahidol Adulyadej, people.person.education, m.0cv3c30
Kong River, location.location.containedby, Asia
Mahidol University, symbols.namesake.named_after, Mahidol Adulyadej
Bolikhamsai Province, location.administrative_division.country, Laos
Mekong, location.location.partially_contained_by, m.0wg9b22
Luang Prabang Province, location.administrative_division.country, Laos
Thailand, location.location.partially_contains, Mekong
China, location.country.capital, Beijing
Mahidol Adulyadej, people.person.parents, Savang Vadhana
Xaignabouli, location.administrative_division.country, Laos
Mahidol Adulyadej, symbols.name_source.namesakes, Mahidol University
m.0wg9kg9, location.partial_containment_relationship.partially_contains, Mekong
Haw Phra Kaew, location.location.containedby, Laos
Cambodia, location.country.administrative_divisions, Kampot Province
Thailand, book.book_subject.works, 4,000 days
Ananda Mahidol, common.topic.notable_for, g.125cb1n4p
Attapeu Province, location.administrative_division.country, Laos
Thailand, location.country.administrative_divisions, Samut Sakhon Province
Vietnam, location.location.partially_contains, Kong River
Cambodia, location.country.administrative_divisions, Preah Vihear
Vajiralongkorn, people.family_member.family, House of Mahidol
Kong River, geography.river.basin_countries, Laos
Lam Ta Klong River, location.location.containedby, Asia
Laos, location.location.partially_contains, Cả River
Sirindhorn, people.family_member.family, House of Mahidol
Thailand, book.book_subject.works, The third brother
Nam Sam River, geography.river.basin_countries, Laos
Thailand, location.country.administrative_divisions, Kanchanaburi Province
Thailand, location.country.administrative_divisions, Prachuap Khiri Khan Province
Sepon River, location.location.partially_containedby, Laos
Basin countries, rdf-schema#domain, River
Southeast Asia, location.location.contains, Thailand
Laos, location.country.administrative_divisions, Khammouane Province
Ratanakiri Province, location.administrative_division.country, Cambodia
Cambodia, location.country.administrative_divisions, Pailin
Kandal Province, location.administrative_division.country, Cambodia
Thailand, royalty.kingdom.rulers, Vajiravudh
Srinagarindra, people.family_member.family, House of Mahidol
Laos, location.location.adjoin_s, m.043w4ks
Laos, location.country.form_of_government, Socialist state
House of Mahidol, people.family.members, Sirindhorn
Ananda Mahidol, people.person.religion, Theravada
Laos, location.country.administrative_divisions, Sekong Province
Bassac River, geography.river.basin_countries, Vietnam
Mekong, location.location.partially_contained_by, m.0wg9kc6
Sekong Province, location.administrative_division.country, Laos
Laos, book.book_subject.works, Vietnam, Cambodia, Laos & the Greater Mekong
m.0wg9553, location.partial_containment_relationship.partially_contains, Mekong
Cambodian Mekong University campus, location.location.containedby, Phnom Penh
Bassac River, location.location.partially_containedby, Vietnam
Mongkut, royalty.monarch.kingdom, Thailand
m.0w366k4, education.education.student, Ananda Mahidol
Laos, location.location.adjoin_s, m.04d0dfp
Thailand, location.country.administrative_divisions, Sakon Nakhon Province
Ma River, location.location.partially_containedby, Laos
Lam Ta Klong River, location.location.partially_containedby, Thailand
China, location.location.partially_contains, Mekong
Nong Khai Province, location.administrative_division.country, Thailand
m.0wg95k3, location.partial_containment_relationship.partially_contains, Mekong
Thailand, location.country.administrative_divisions, Ranong Province
Nam Sam River, location.location.partially_containedby, Vietnam
Thailand, location.country.administrative_divisions, Tha Chana District
House of Mahidol, people.family.founder, Srinagarindra
Kok River, location.location.containedby, Asia
Thailand, location.country.administrative_divisions, Kamphaeng Phet Province
Garçon plongeant dans le Mékong au Cambodge, common.image.size, m.0kjmvg
Mekong, geography.river.basin_countries, Cambodia
Cambodia, royalty.kingdom.rulers, Suryavarman II
Kong River, location.location.partially_containedby, Vietnam
Lam Ta Klong River, geography.river.basin_countries, Laos
Cambodian Mekong University campus, location.location.containedby, Cambodia
Vietnam, Cambodia, Laos & the Greater Mekong, book.written_work.subjects, Laos
Chakri Dynasty, royalty.royal_line.monarchs_from_this_line, Ananda Mahidol
m.0n5c9r6, book.contents.work, Vietnam, Cambodia, Laos & the Greater Mekong
Mekong, common.topic.webpage, m.0b481ts
none View of the Mekong before sunset., common.image.size, m.0k127w
Ananda Mahidol, common.topic.notable_types, Politician
Saigon River, location.location.partially_containedby, Vietnam
Cambodia, location.location.partially_contains, Saigon River
Tha Chana District, location.administrative_division.country, Thailand
Thailand, location.country.administrative_divisions, Buriram Province
Mekong, geography.river.cities, Phnom Penh
Mekong, common.topic.article, m.0j0gh
Mahidol University, location.location.containedby, Thailand
Ruak River, location.location.containedby, Asia
m.0wg9mf3, location.partial_containment_relationship.partially_contains, Mekong
Sakon Nakhon Province, location.administrative_division.country, Thailand
Thailand, location.country.administrative_divisions, Nong Khai Province
Adventures by Disney - Cambodia, Vietnam & Laos Vacation, travel.tour_operator.travel_destinations, Mekong
Mekong, location.location.partially_contained_by, m.0wg9mf3
Laos, location.country.administrative_divisions, Xiangkhouang Province
Mahidol Adulyadej, people.person.sibling_s, m.0v_p4gz
Mekong, location.location.partially_containedby, Vietnam
Thailand, location.country.administrative_divisions, Prachinburi Province
Laos, common.topic.notable_types, Country
Thailand, royalty.kingdom.rulers, Rama I
m.0wg9b22, location.partial_containment_relationship.partially_contains, Mekong
Myanmar, common.topic.notable_types, Country
Mekong, geography.body_of_water.bridges, Mỹ Thuận Bridge
Mekong, geography.river.mouth, South China Sea
Thailand, location.country.administrative_divisions, Nakhon Sawan Province
Laos, location.country.administrative_divisions, Phongsaly Province
Ruak River, geography.river.mouth, Mekong
Srepok River, geography.river.basin_countries, Vietnam
Koh Kong Province, location.administrative_division.country, Cambodia
Mahidol Adulyadej, people.person.education, m.0n1n2sn
Kong River, geography.river.basin_countries, Cambodia
Thailand, location.country.administrative_divisions, Nakhon Pathom Province
Laos, location.country.administrative_divisions, Bolikhamsai Province
Cambodia, location.country.form_of_government, Constitutional monarchy
Mahidol Adulyadej, people.person.education, m.02wmw0w
Mekong, travel.travel_destination.tour_operators, Adventures by Disney - Cambodia, Vietnam & Laos Vacation
Prey Veng Province, location.administrative_division.country, Cambodia
Mekong, location.location.partially_contained_by, m.0wg9553
Thailand, location.country.administrative_divisions, Amnat Charoen Province
Nāga, base.mystery.cryptid_classification.area_of_occurrence, Mekong
House of Mahidol, people.family.members, Vajiralongkorn
Ananda Mahidol, people.deceased_person.place_of_death, Grand Palace
Ranong Province, location.administrative_division.country, Thailand
Laos, location.country.administrative_divisions, Salavan Province
Adventures by Disney - Cambodia, Vietnam & Laos Vacation, travel.tourist_attraction.near_travel_destination, Mekong
Cả River, geography.river.basin_countries, Vietnam
Vietnam, Cambodia, Laos & the Greater Mekong, book.book.genre, Travel
Mukdahan Province, location.administrative_division.country, Thailand
Ananda Mahidol, people.deceased_person.cause_of_death, Firearm
Myanmar, location.location.partially_contains, Kok River
Cambodia, location.country.administrative_divisions, Kep
Cambodia, location.country.form_of_government, Parliamentary system
Mahidol Adulyadej, common.topic.article, m.05dqbm
Kong River, location.location.partially_containedby, Laos
Laos, location.location.partially_contains, Lam Ta Klong River
Mahidol Adulyadej, people.person.parents, Chulalongkorn
Ananda Mahidol, freebase.valuenotation.has_value, Height
Thailand, royalty.kingdom.rulers, Mongkut
Thailand, location.country.administrative_divisions, Ubon Ratchathani Province
Laos, location.location.containedby, Asia
Thailand, location.location.partially_contains, Lam Ta Klong River
National University of Laos, location.location.containedby, Laos
Cambodia, location.country.administrative_divisions, Takéo Province
Cambodia, location.country.administrative_divisions, Kratié Province
Ananda Mahidol, people.person.religion, Buddhism
Thailand, location.country.administrative_divisions, Maha Sarakham Province
Laos, location.location.partially_contains, Ma River
Ananda Mahidol, royalty.noble_person.titles, m.0b7cgz1
Thailand, location.country.internet_tld, th
Mekong, book.book_subject.works, Vietnam, Cambodia, Laos & the Greater Mekong
Sepon River, geography.river.basin_countries, Laos
Cambodia, royalty.kingdom.rulers, Sisowath Monivong
Ananda Mahidol, royalty.monarch.royal_line, Chakri Dynasty
Cambodia, location.country.administrative_divisions, Mondulkiri Province
Saigon River, geography.river.basin_countries, Vietnam
Laos, location.country.languages_spoken, English Language
Thailand, base.locations.countries.continent, Asia
Laos, location.location.partially_contains, Phu Xai Lai Leng
House of Mahidol, people.family.members, Ananda Mahidol
Ananda Mahidol, people.family_member.family, House of Mahidol
Mekong, geography.river.basin_countries, Laos
Ananda Mahidol, common.topic.article, m.01c573
Socialist state, government.form_of_government.countries, Laos
Mahidol Adulyadej, people.person.spouse_s, m.0j4lfsr
Mekong, geography.river.basin_countries, Thailand
Ananda Mahidol, people.person.parents, Mahidol Adulyadej
Tonlé San, geography.river.mouth, Mekong
Vietnam, Cambodia, Laos & the Greater Mekong, book.published_work.published_in_published_as, m.0n5c9r6
Bokeo Province, location.administrative_division.country, Laos
Southeast Asia, location.location.contains, Cambodia
Ananda Mahidol, government.politician.government_positions_held, m.010wskrs
Ananda Mahidol, royalty.noble_person.titles, m.07706dh
Laos, location.country.administrative_divisions, Luang Namtha Province
Cả River, geography.river.basin_countries, Laos
Cambodia, common.topic.notable_types, Country
Hong Kong, location.country.official_language, English Language
Sekong Province, base.aareas.schema.administrative_area.administrative_parent, Laos
Thailand, royalty.kingdom.rulers, Rama II of Siam
Cambodia, location.country.administrative_divisions, Kampong Thom Province
Nam Sam River, geography.river.basin_countries, Vietnam
Ananda Mahidol, people.family.members, Chakri Dynasty
Laos, location.location.containedby, Southeast Asia
Mekong, base.mystery.cryptid_observation_location.cryptid_s_occurring_here, Nāga
Houaphanh Province, location.administrative_division.country, Laos
Ananda Mahidol, people.person.nationality, Thailand
Laos, location.location.adjoin_s, m.046cswt
Cambodia, location.country.administrative_divisions, Kampong Speu Province
Cambodia, location.country.administrative_divisions, Pursat Province
Mekong, base.schemastaging.context_name.pronunciation, g.125_qw4pr
Mekong, location.location.partially_containedby, Myanmar
Mekong, common.topic.notable_types, River
Mahidol Adulyadej, common.topic.image, Statue of Mahidol Adulyadej
Thailand, royalty.kingdom.rulers, Prajadhipok
Thai–Lao Friendship Bridge, transportation.bridge.body_of_water_spanned, Mekong
Mekong, geography.river.basin_countries, China
Nonthaburi Province, location.administrative_division.country, Thailand
Nam Sam River, location.location.containedby, Asia
Mekong Delta, location.location.contains, Tien Giang Province
Laos, location.country.administrative_divisions, Oudomxay Province
House of Mahidol, people.family.members, Ploypailin Jensen
Chulalongkorn, royalty.monarch.kingdom, Thailand
Tonlé San, geography.river.basin_countries, Vietnam
Mahidol Adulyadej, people.family_member.family, Chakri Dynasty
Mekong, location.location.partially_containedby, China
Cambodia, location.country.administrative_divisions, Siem Reap Province
Mahidol Adulyadej, people.person.children, Galyani Vadhana
Mekong, geography.body_of_water.bridges, Second Thai–Lao Friendship Bridge

Answer: Thailand