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: In what country, with an army force of more than 857000,  was the Vietnam war fought? 
Knowledge Triplets: m.0b78jlb, military.military_command.military_conflict, Joint warfare in South Vietnam, 1963–69
War in Vietnam (1954-1959), base.culturalevent.event.entity_involved, Anti-communism
North Vietnam, military.military_combatant.military_conflicts, m.04z083c
South Vietnam, military.military_combatant.military_conflicts, m.0gb12l8
North Vietnam, military.military_combatant.military_conflicts, m.06wj2w6
North Vietnam, location.country.capital, Hanoi
North Vietnam, military.military_combatant.military_conflicts, m.04fvk4y
South Vietnam, military.military_combatant.military_conflicts, m.04z083j
Vietnam War, common.topic.image, UH-1combatmission1970
Joint warfare in South Vietnam, 1963–69, time.event.included_in_event, Cold War
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Communism
North Vietnam, military.military_combatant.military_conflicts, m.0g5c716
m.03z979q, military.military_combatant_group.combatants, North Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04ywny8
North Vietnam, military.military_combatant.force_deployments, m.04ml3l4
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Anti-communism
Joint warfare in South Vietnam, 1963–69, military.military_conflict.combatants, m.0b78mbw
Joint warfare in South Vietnam, 1963–69, military.military_conflict.commanders, m.0c5n9pb
m.02h77k6, military.casualties.military_conflict, Vietnam War
Vietnam War, common.topic.webpage, m.0b4887b
South Vietnam, military.military_combatant.military_conflicts, m.05nq44r
Vietnam War, base.culturalevent.event.entity_involved, Australia
Vietnam War, book.written_work.subjects, Southeast Asia
Vietnam War, military.military_conflict.casualties, m.04kb4kx
Vietnam War, common.topic.notable_types, Military Conflict
Vietnam War, military.military_conflict.commanders, m.02h77w4
North Vietnam, military.military_combatant.military_conflicts, m.04yw7ks
War in Vietnam, military.military_conflict.combatants, m.09sdkq2
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Nguyễn Văn Thiệu
South Vietnam, military.military_combatant.military_conflicts, m.0b79c5w
North Vietnam, military.military_combatant.military_conflicts, m.04z0cd1
Southeast Asia, book.book_subject.works, The Last Valley: Dien Bien Phu and the French Defeat in Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04yv2ck
North Vietnam, military.military_combatant.military_conflicts, m.04z0ccf
Vietnam War, military.military_conflict.casualties, m.04kb4mq
m.02h77tp, military.military_command.military_conflict, Vietnam War
South Vietnam, military.military_combatant.military_conflicts, m.05t8hr0
m.0jmy703, military.military_combatant_group.combatants, North Vietnam
Cambodia, location.location.events, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.04yx8kv
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Cao Văn Viên
North Vietnam, military.military_combatant.military_conflicts, m.0cmxgmm
Vietnam, location.country.capital, Hanoi
War in Vietnam (1954-1959), base.culturalevent.event.entity_involved, South Vietnam
Vietnam War, base.culturalevent.event.entity_involved, South Vietnam
War in Vietnam (1954-1959), time.event.included_in_event, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.0gtztyw
North Vietnam, military.military_combatant.military_conflicts, m.04yvfm8
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, William Westmoreland
Vietnam War, common.topic.webpage, m.09y37g1
North Vietnam, military.military_combatant.military_conflicts, m.04y_6r1
South Vietnam, military.military_combatant.military_conflicts, m.04z002j
North Vietnamese invasion of Laos, military.military_conflict.combatants, m.0dlryzb
Vietnam War, military.military_conflict.commanders, m.0478pmb
m.04yz37j, military.military_combatant_group.combatants, North Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.0b798ys
m.0c5n9pb, military.military_command.military_conflict, Joint warfare in South Vietnam, 1963–69
South Vietnam, military.military_combatant.military_conflicts, m.04yvqm7
North Vietnam, military.military_combatant.military_conflicts, m.04y_br0
War in Vietnam, military.military_conflict.combatants, m.09sdkpy
North Vietnam, military.military_combatant.military_conflicts, m.04yzblp
Vietnam War, military.military_conflict.combatants, m.03z9671
Opposition to United States involvement in the Vietnam War, time.event.includes_event, Student Strike of 1970
m.04z002c, military.military_combatant_group.combatants, North Vietnam
Vietnam War, time.event.included_in_event, Indochina Wars
North Vietnam, military.military_combatant.military_conflicts, m.04y_2zr
Joint warfare in South Vietnam, 1963–69, military.military_conflict.combatants, m.0b78bs8
North Vietnam, military.military_combatant.military_conflicts, m.04z2bdv
North Vietnam, military.military_combatant.military_conflicts, m.04z7_yd
North Vietnam, military.military_combatant.military_conflicts, m.04z15c1
m.0b4887b, common.webpage.topic, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.05cnzgm
North Vietnam, military.military_combatant.military_conflicts, m.04z35mt
Joint warfare in South Vietnam, 1963–69, time.event.locations, South Vietnam
War in Vietnam, base.culturalevent.event.entity_involved, United States of America
South Vietnam, military.military_combatant.force_deployments, m.02h782s
North Vietnam, military.military_combatant.military_conflicts, m.04y_df7
War in Vietnam, base.culturalevent.event.entity_involved, South Vietnam
South Vietnam, military.military_combatant.military_conflicts, m.04yx35z
South Vietnam, military.military_combatant.military_conflicts, m.04z18hs
Sino-Vietnamese War, time.event.locations, Vietnam
North Vietnam, military.military_combatant.casualties, m.0c1qd3l
Vietnam War, time.event.locations, North Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04yz37j
South Vietnam, military.military_combatant.military_conflicts, m.04y_651
Vietnam War, location.location.events, Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04yw881
North Vietnam, military.military_combatant.military_conflicts, m.0jmy703
m.03z97v6, military.force_strength.combatant, North Vietnam
Vietnam War, military.military_conflict.casualties, m.04kb4pf
North Vietnam, location.location.events, Joint warfare in South Vietnam, 1963–69
North Vietnam, military.military_combatant.military_conflicts, m.04z0zb9
m.02h782s, military.force_strength.combatant, South Vietnam
Vietnam War, military.military_conflict.commanders, m.0478plb
North Vietnam, military.military_combatant.military_conflicts, m.05cnn5f
Vietnam, location.country.administrative_divisions, Hanoi
Vietnam War, military.military_conflict.casualties, m.04kb4kj
m.09sdkpy, military.military_combatant_group.conflict, War in Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04ftr19
North Vietnam, military.military_combatant.military_conflicts, m.04y_538
North Vietnam, military.military_combatant.military_conflicts, m.04ftw4b
North Vietnam, military.military_combatant.military_conflicts, m.04z0z3d
North Vietnam, military.military_combatant.military_conflicts, m.04ftx09
Vietnam War, military.military_conflict.commanders, m.07skn34
War in Vietnam, common.topic.notable_types, Military Conflict
Vietnam War, common.topic.webpage, m.09w6h34
War in Vietnam (1954-1959), time.event.locations, North Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.0bd4cz8
Vietnam War, time.event.locations, Cambodia
North Vietnam, military.military_combatant.military_conflicts, m.04yz2_y
North Vietnam, military.military_combatant.military_conflicts, m.04ywmnk
South Vietnam, military.military_combatant.military_conflicts, m.04z17np
m.04z0cd1, military.military_combatant_group.combatants, North Vietnam
m.0dh6jtq, military.military_command.military_conflict, War in Vietnam (1954-1959)
War in Vietnam (1954-1959), military.military_conflict.combatants, m.09j3ckd
South Vietnam, military.military_combatant.military_conflicts, m.0chc14c
Joint warfare in South Vietnam, 1963–69, military.military_conflict.commanders, m.0b78jlb
Joint warfare in South Vietnam, 1963–69, military.military_conflict.combatants, m.0b78_7h
Joint warfare in South Vietnam, 1963–69, military.military_conflict.commanders, m.0b7915n
m.02h77jh, military.casualties.military_conflict, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.04yzp99
m.0g5c716, military.military_combatant_group.combatants, North Vietnam
m.02h782s, military.force_strength.military_conflict, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.04z17nj
Vietnam War, common.topic.webpage, m.09xtw5q
North Vietnam, military.military_combatant.military_conflicts, m.04fts61
North Vietnam, military.military_combatant.military_conflicts, m.04fvprj
m.09w6h34, common.webpage.topic, Vietnam War
Vietnam War, military.military_conflict.commanders, m.02h77tp
North Vietnam, military.military_combatant.military_conflicts, m.04yxsw9
War in Vietnam, time.event.included_in_event, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.04y_s8t
m.09y37g1, common.webpage.topic, Vietnam War
North Vietnam, military.military_combatant.casualties, m.04ml3lw
War in Vietnam (1954-1959), base.culturalevent.event.entity_involved, Ngo Dinh Diem
War in Vietnam, base.culturalevent.event.entity_involved, Ngo Dinh Diem
North Vietnam, military.military_combatant.military_conflicts, m.0cv4v7w
North Vietnam, military.military_combatant.military_conflicts, m.04zd3yf
South Vietnam, military.military_combatant.military_conflicts, m.04ftyc1
North Vietnam, military.military_combatant.military_conflicts, m.0gx8n8z
North Vietnam, military.military_combatant.military_conflicts, m.0fs6v7n
South Vietnam, military.military_combatant.casualties, m.02h77gp
War in Vietnam, base.culturalevent.event.entity_involved, Ho Chi Minh
Vietnam War, base.culturalevent.event.entity_involved, Kingdom of Laos
North Vietnam, military.military_combatant.military_conflicts, m.04y_64x
North Vietnam, location.location.events, War in Vietnam (1954-1959)
Vietnam War, common.topic.webpage, m.0b481t3
North Vietnam, military.military_combatant.military_conflicts, m.04yvqp2
North Vietnam, military.military_combatant.military_conflicts, m.04yx35t
North Vietnam, military.military_combatant.military_conflicts, m.0dfgcjt
North Vietnam, military.military_combatant.military_conflicts, m.04y_39b
South Vietnam, military.military_combatant.military_conflicts, m.05cnzgs
m.02h77w4, military.military_command.military_conflict, Vietnam War
Vietnam War, time.event.locations, Laos
South Vietnam, military.military_combatant.force_deployments, m.02h7m00
Laos, location.location.events, Joint warfare in South Vietnam, 1963–69
War in Vietnam, time.event.locations, South Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.0bd485_
North Vietnam, military.military_combatant.military_conflicts, m.04z0n0q
m.04kb4m4, military.casualties.military_conflict, Vietnam War
Vietnam War, military.military_conflict.casualties, m.04kb4m4
m.04y_538, military.military_combatant_group.combatants, North Vietnam
Vietnam War, base.culturalevent.event.entity_involved, North Vietnam
m.0478plb, military.military_command.military_conflict, Vietnam War
South Vietnam, military.military_combatant.military_conflicts, m.05cl1dn
m.04ml3l4, military.force_strength.combatant, North Vietnam
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Hoàng Văn Thái
Vietnam War, common.topic.webpage, m.09w6pvn
m.06482w8, military.military_combatant_group.combatants, North Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04ftw8j
Vietnam War, common.topic.webpage, m.09wkmg9
Vietnam War, military.military_conflict.casualties, m.04kb4n8
North Vietnam, military.military_combatant.military_conflicts, m.0bd31gj
m.07slz04, military.military_combatant_group.combatants, North Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04yvh30
m.09vkk7z, military.military_combatant_group.conflict, First Indochina War
Vietnam War, military.military_conflict.casualties, m.04kb4m_
North Vietnam, military.military_combatant.military_conflicts, m.0bd34v7
North Vietnam, military.military_combatant.military_conflicts, m.04yvqm2
Vietnam War, base.culturalevent.event.entity_involved, Thailand
Cyclo, film.film.country, Vietnam
Vietnam War, time.event.locations, South Vietnam
North Vietnam, military.military_combatant.force_deployments, m.03z97v6
War in Vietnam (1954-1959), base.culturalevent.event.entity_involved, Viet Minh
m.04kb4kj, military.casualties.military_conflict, Vietnam War
War in Vietnam, military.military_conflict.commanders, m.0dh5jv_
South Vietnam, military.military_combatant.military_conflicts, m.09j4462
North Vietnam, military.military_combatant.military_conflicts, m.07lm3yg
m.04kb4pq, military.casualties.military_conflict, Vietnam War
South Vietnam, military.military_combatant.military_conflicts, m.04fts66
War in Vietnam (1954-1959), common.topic.notable_types, Military Conflict
North Vietnam, military.military_combatant.military_conflicts, m.04fv8nj
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Pathet Lao
m.0dh5jv_, military.military_command.military_conflict, War in Vietnam
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Võ Nguyên Giáp
North Vietnam, military.military_combatant.military_conflicts, m.04fvjr2
Vietnam War, military.military_conflict.casualties, m.04kb4l7
North Vietnam, military.military_combatant.military_conflicts, m.03z97td
North Vietnam, military.military_combatant.military_conflicts, m.04z084z
Vietnam War, common.topic.webpage, m.09wmlvm
North Vietnam, military.military_combatant.military_conflicts, m.04z0cm0
War in Vietnam, time.event.locations, North Vietnam
m.04z1097, military.military_combatant_group.combatants, North Vietnam
South Vietnam, military.military_combatant.military_conflicts, m.04z0853
Southeast Asia, location.location.events, Vietnam War
Vietnam War, common.topic.webpage, m.09wx9cc
m.02h783h, military.force_strength.military_conflict, Vietnam War
m.0b78_7h, military.military_combatant_group.conflict, Joint warfare in South Vietnam, 1963–69
Vietnam War, common.topic.webpage, m.09w6kz6
South Vietnam, military.military_combatant.military_conflicts, m.05tfs24
Vietnam War, base.culturalevent.event.entity_involved, China
m.03z9671, military.military_combatant_group.conflict, Vietnam War
War in Vietnam (1954-1959), time.event.locations, South Vietnam
Vietnam War, common.topic.webpage, m.09xm1xv
Vietnam War, military.military_conflict.casualties, m.02h77k6
m.03z979q, military.military_combatant_group.conflict, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.0ggd4zm
North Vietnam, military.military_combatant.military_conflicts, m.04z0sqf
North Vietnam, military.military_combatant.military_conflicts, m.04ywvbz
North Vietnam, military.military_combatant.military_conflicts, m.0b797xy
Sino-Vietnamese War, military.military_conflict.combatants, m.09hxz2s
North Vietnam, military.military_combatant.military_conflicts, m.05tbj5v
War in Vietnam (1954-1959), base.culturalevent.event.entity_involved, Ho Chi Minh
North Vietnam, military.military_combatant.military_conflicts, m.0g5dgz6
North Vietnam, military.military_combatant.military_conflicts, m.04y_0nj
Vietnam War, common.topic.webpage, m.09xfyqk
War in Vietnam (1954-1959), military.military_conflict.commanders, m.0dh6jtq
Vietnam War, military.military_conflict.casualties, m.04kb4lw
North Vietnam, military.military_combatant.military_conflicts, m.04z0g8_
m.09xtw5q, common.webpage.topic, Vietnam War
North Vietnam, military.military_combatant.force_deployments, m.02h783h
North Vietnam, military.military_combatant.casualties, m.04kb4kx
m.04z15c1, military.military_combatant_group.combatants, North Vietnam
Vietnam War, military.military_conflict.casualties, m.04kb4mf
Vietnam War, base.culturalevent.event.entity_involved, Francoist Spain
m.04kb4mq, military.casualties.military_conflict, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.07slz04
m.07skn34, military.military_command.military_conflict, Vietnam War
m.04kb4p4, military.casualties.military_conflict, Vietnam War
North Vietnamese invasion of Laos, time.event.included_in_event, Vietnam War
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Kingdom of Laos
North Vietnam, military.military_combatant.military_conflicts, m.062v8cs
North Vietnam, military.military_combatant.military_conflicts, m.09j4467
Southeast Asia, book.book_subject.works, Vietnam War
South Vietnam, military.military_combatant.military_conflicts, m.04y_300
North Vietnam, military.military_combatant.casualties, m.0c1qd3v
North Vietnam, military.military_combatant.military_conflicts, m.04z002c
Vietnam War, book.written_work.subjects, United States of America
North Vietnam, military.military_combatant.military_conflicts, m.04y_qt6
Vietnam War, military.military_conflict.commanders, m.02h77vl
m.04y_651, military.military_combatant_group.combatants, South Vietnam
m.09sdkq2, military.military_combatant_group.conflict, War in Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04z1097
Joint warfare in South Vietnam, 1963–69, time.event.locations, Laos
Vietnam War, military.military_conflict.casualties, m.02h77jh
m.09j3ckd, military.military_combatant_group.conflict, War in Vietnam (1954-1959)
Vietnam War, time.event.locations, Vietnam
Opposition to United States involvement in the Vietnam War, time.event.included_in_event, Vietnam War
Vietnam War, military.military_conflict.commanders, m.0w5r65c
Vietnam War, military.military_conflict.casualties, m.04kb4ll
Vietnam War, time.event.locations, Southeast Asia
Vietnam War, military.military_conflict.casualties, m.04kb4nl
Joint warfare in South Vietnam, 1963–69, time.event.included_in_event, Vietnam War
Joint warfare in South Vietnam, 1963–69, common.topic.notable_types, Military Conflict
North Vietnam, military.military_combatant.military_conflicts, m.05cl1dh
North Vietnamese invasion of Laos, military.military_conflict.combatants, m.0g5cj73
Opposition to United States involvement in the Vietnam War, common.topic.notable_types, Event
South Vietnam, military.military_combatant.military_conflicts, m.04yz302
Joint warfare in South Vietnam, 1963–69, time.event.locations, North Vietnam
Vietnam War, common.topic.webpage, m.09xgcz2
m.0b7915n, military.military_command.military_conflict, Joint warfare in South Vietnam, 1963–69
Vietnam War, base.culturalevent.event.entity_involved, Taiwan
War in Vietnam (1954-1959), base.culturalevent.event.entity_involved, Le Duan
South Vietnam, military.military_combatant.military_conflicts, m.04z0g94
m.0w5r65c, military.military_command.military_conflict, Vietnam War
North Vietnamese invasion of Laos, military.military_conflict.combatants, m.0dls8dn
m.02h77vl, military.military_command.military_conflict, Vietnam War
Vietnam War, military.military_conflict.casualties, m.04kb4p4
m.02h783h, military.force_strength.combatant, North Vietnam
m.09xfyqk, common.webpage.topic, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.05cldkd
Vietnam War, military.military_conflict.casualties, m.02h77gp
South Vietnam, military.military_combatant.military_conflicts, m.05tfrd3
North Vietnam, military.military_combatant.military_conflicts, m.04yvf_7
North Vietnam, military.military_combatant.military_conflicts, m.0dls8dn
South Vietnam, military.military_combatant.military_conflicts, m.04yvh35
War in Vietnam (1954-1959), time.event.included_in_event, Cold War
South Vietnam, military.military_combatant.military_conflicts, m.04yw886
Vietnam War, military.military_conflict.commanders, g.11btrq9dfw
m.09j4467, military.military_combatant_group.combatants, North Vietnam
m.0b78bs8, military.military_combatant_group.conflict, Joint warfare in South Vietnam, 1963–69
Vietnam War, common.topic.webpage, m.09xwgxs
North Vietnam, military.military_combatant.military_conflicts, m.04ftqs2
South Vietnam, military.military_combatant.military_conflicts, m.0g5c27c
m.04z0df9, military.military_combatant_group.combatants, North Vietnam
m.0b78mbw, military.military_combatant_group.conflict, Joint warfare in South Vietnam, 1963–69
Vietnam War, military.military_conflict.combatants, m.03z979q
North Vietnam, military.military_combatant.military_conflicts, m.0b79163
North Vietnam, military.military_combatant.military_conflicts, m.04ftw28
North Vietnam, military.military_combatant.casualties, m.04kb4l7
Vietnam War, military.military_conflict.casualties, m.04kb4pq
North Vietnam, military.military_combatant.military_conflicts, m.04yz_7h
Vietnam War, common.topic.article, m.07_nr
m.0b79163, military.military_combatant_group.combatants, North Vietnam
m.0b481t3, common.webpage.topic, Vietnam War
North Vietnam, military.military_combatant.military_conflicts, m.0g5cwl3
North Vietnam, military.military_combatant.military_conflicts, m.04z0df9
Vietnam War, time.event.included_in_event, 20th century
m.02h77gp, military.casualties.military_conflict, Vietnam War
Vietnam War, military.military_conflict.force_strengths, m.02h782s
South Vietnam, military.military_combatant.military_conflicts, m.04z0z3k
South Vietnam, military.military_combatant.military_conflicts, m.04m2vg5
Joint warfare in South Vietnam, 1963–69, base.culturalevent.event.entity_involved, Viet Cong
Vietnam War, military.military_conflict.casualties, m.02h77fs
Vietnam War, military.military_conflict.force_strengths, m.02h783h
Vietnam War, book.written_work.subjects, Asia
m.04y_300, military.military_combatant_group.combatants, South Vietnam
First Indochina War, time.event.locations, North Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.03z979q
m.04kb4n8, military.casualties.military_conflict, Vietnam War
m.0478pmb, military.military_command.military_conflict, Vietnam War
Laos, location.location.events, Vietnam War
Vietnam War, military.military_conflict.casualties, m.043wptp
m.02h7m00, military.force_strength.combatant, South Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04yvsdy
Vietnam War, base.culturalevent.event.entity_involved, Cuba
South Vietnam, military.military_combatant.military_conflicts, m.03z9671
m.09w6kz6, common.webpage.topic, Vietnam War
m.04kb4l7, military.casualties.military_conflict, Vietnam War
Vietnam War, common.topic.webpage, m.0b47hsk
North Vietnam, military.military_combatant.military_conflicts, m.07llp3_
First Indochina War, base.culturalevent.event.entity_involved, North Vietnam
North Vietnam, military.military_combatant.military_conflicts, m.04z1mrp
War in Vietnam (1954-1959), base.culturalevent.event.entity_involved, Communism
Vietnam War, base.culturalevent.event.entity_involved, North Korea
South Vietnam, military.military_combatant.military_conflicts, m.04z0cm5
North Vietnam, military.military_combatant.military_conflicts, m.06482w8

Answer: Vietnam