Ex parte Endo
E95690
Ex parte Endo is a landmark 1944 U.S. Supreme Court decision that held the government could not continue to detain a loyal American citizen of Japanese ancestry in a World War II internment camp.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Ex parte Endo canonical | 4 |
| Ex parte Mitsuye Endo | 1 |
| Mitsuye Endo ordered to be released from detention | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T796484 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Ex parte Endo Context triple: [Japanese Americans, notableCourtCase, Ex parte Endo]
-
A.
Yamashita v. Styer
Yamashita v. Styer is a landmark 1946 U.S. Supreme Court case that upheld the conviction of Japanese General Tomoyuki Yamashita and established the controversial "command responsibility" doctrine in international law.
-
B.
Chiafalo v. Washington
Chiafalo v. Washington is a 2020 U.S. Supreme Court case that unanimously upheld states’ authority to penalize or replace “faithless electors” who do not vote in line with their state’s popular vote in presidential elections.
-
C.
Korematsu v. United States
Korematsu v. United States is a landmark 1944 U.S. Supreme Court case that upheld the wartime internment of Japanese Americans, later widely condemned as a grave civil liberties violation.
-
D.
De Canas v. Bica
De Canas v. Bica is a 1976 U.S. Supreme Court case that upheld a California law regulating the employment of unauthorized immigrants, holding that not all state regulations touching on immigration are preempted by federal law.
-
E.
Bolling v. Sharpe
Bolling v. Sharpe is a 1954 U.S. Supreme Court case that held racial segregation in Washington, D.C. public schools unconstitutional under the Fifth Amendment’s Due Process Clause.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Ex parte Endo Target entity description: Ex parte Endo is a landmark 1944 U.S. Supreme Court decision that held the government could not continue to detain a loyal American citizen of Japanese ancestry in a World War II internment camp.
-
A.
Yamashita v. Styer
Yamashita v. Styer is a landmark 1946 U.S. Supreme Court case that upheld the conviction of Japanese General Tomoyuki Yamashita and established the controversial "command responsibility" doctrine in international law.
-
B.
Chiafalo v. Washington
Chiafalo v. Washington is a 2020 U.S. Supreme Court case that unanimously upheld states’ authority to penalize or replace “faithless electors” who do not vote in line with their state’s popular vote in presidential elections.
-
C.
Korematsu v. United States
Korematsu v. United States is a landmark 1944 U.S. Supreme Court case that upheld the wartime internment of Japanese Americans, later widely condemned as a grave civil liberties violation.
-
D.
De Canas v. Bica
De Canas v. Bica is a 1976 U.S. Supreme Court case that upheld a California law regulating the employment of unauthorized immigrants, holding that not all state regulations touching on immigration are preempted by federal law.
-
E.
Bolling v. Sharpe
Bolling v. Sharpe is a 1954 U.S. Supreme Court case that held racial segregation in Washington, D.C. public schools unconstitutional under the Fifth Amendment’s Due Process Clause.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
United States Supreme Court case
ⓘ
landmark decision ⓘ |
| areaOfLaw |
civil rights
ⓘ
constitutional law ⓘ habeas corpus ⓘ |
| citation | 323 U.S. 283 ⓘ |
| citedFor | principle that loyal citizens cannot be detained without statutory authority ⓘ |
| constitutionalContext | World War II Japanese American internment ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| court | Supreme Court of the United States ⓘ |
| decisionDate | 1944-12-18 ⓘ |
| decisionType | unanimous decision ⓘ |
| fullName |
Ex parte Endo
self-linksurface differs
ⓘ
surface form:
Ex parte Mitsuye Endo
|
| governmentActionChallenged | detention of loyal Japanese Americans in relocation centers ⓘ |
| holding |
The U.S. government may not detain a concededly loyal American citizen of Japanese ancestry in a relocation center
ⓘ
War Relocation Authority ⓘ
surface form:
The War Relocation Authority lacked authority to subject loyal citizens to continued detention
|
| impact |
contributed to the closing of War Relocation Authority camps
ⓘ
limited the scope of wartime detention of Japanese Americans ⓘ |
| jurisdiction |
United States of America
ⓘ
surface form:
United States
|
| language | English ⓘ |
| legalDoctrine |
limits on executive wartime powers
ⓘ
statutory interpretation of War Relocation Authority powers ⓘ |
| legalIssue | lawfulness of detention of loyal Japanese Americans during World War II ⓘ |
| opinionBy |
William O. Douglas
ⓘ
surface form:
Justice William O. Douglas
|
| petitioner | Mitsuye Endo ⓘ |
| petitionerAncestry | Japanese ancestry ⓘ |
| petitionerCitizenship | United States citizen ⓘ |
| petitionerLoyaltyStatus | concededly loyal ⓘ |
| precedentFor | protection of citizens from arbitrary detention ⓘ |
| relatedTo |
Executive Order 9066
ⓘ
Hirabayashi v. United States ⓘ Japanese American internment ⓘ Korematsu v. United States ⓘ War Relocation Authority ⓘ civil liberties during wartime ⓘ |
| remedy | writ of habeas corpus granted ⓘ |
| respondent |
United States of America
ⓘ
surface form:
United States
|
| result |
Ex parte Endo
self-linksurface differs
ⓘ
surface form:
Mitsuye Endo ordered to be released from detention
|
| timePeriod | World War II ⓘ |
| yearDecided | 1944 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Ex parte Endo Description of subject: Ex parte Endo is a landmark 1944 U.S. Supreme Court decision that held the government could not continue to detain a loyal American citizen of Japanese ancestry in a World War II internment camp.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Ex parte Mitsuye Endo
this entity surface form:
Mitsuye Endo ordered to be released from detention