Memorial Day
E87404
Memorial Day is a U.S. federal holiday observed on the last Monday of May to honor and remember military personnel who have died in service to the country.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Memorial Day canonical | 22 |
| Memorial Day weekend | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T741512 — 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: Memorial Day Context triple: [Flag Day, follows, Memorial Day]
-
A.
Armistice Day
Armistice Day is an annual observance marking the end of World War I hostilities on November 11, 1918, and honoring those who served and died in the conflict.
-
B.
Thanksgiving Day
Thanksgiving Day is a major U.S. national holiday celebrated in late November, centered on giving thanks, sharing a festive meal (traditionally featuring turkey), and spending time with family and friends.
-
C.
King's Day
King's Day is a nationwide Dutch holiday celebrated each April with street festivals, orange-themed festivities, and open-air markets honoring the birthday of the reigning monarch.
-
D.
Flag Day
Flag Day is a U.S. observance held annually on June 14 to commemorate the adoption of the American flag in 1777.
-
E.
Double Ten Day
Double Ten Day is Taiwan’s national day, celebrated annually on October 10 to mark the start of the 1911 revolution that led to the founding of the Republic of China.
- 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: Memorial Day Target entity description: Memorial Day is a U.S. federal holiday observed on the last Monday of May to honor and remember military personnel who have died in service to the country.
-
A.
Armistice Day
Armistice Day is an annual observance marking the end of World War I hostilities on November 11, 1918, and honoring those who served and died in the conflict.
-
B.
Thanksgiving Day
Thanksgiving Day is a major U.S. national holiday celebrated in late November, centered on giving thanks, sharing a festive meal (traditionally featuring turkey), and spending time with family and friends.
-
C.
King's Day
King's Day is a nationwide Dutch holiday celebrated each April with street festivals, orange-themed festivities, and open-air markets honoring the birthday of the reigning monarch.
-
D.
Flag Day
Flag Day is a U.S. observance held annually on June 14 to commemorate the adoption of the American flag in 1777.
-
E.
Double Ten Day
Double Ten Day is Taiwan’s national day, celebrated annually on October 10 to mark the start of the 1911 revolution that led to the founding of the Republic of China.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. federal holiday
ⓘ
public holiday ⓘ |
| alsoKnownAs | Decoration Day ⓘ |
| associatedWith |
American Civil War
ⓘ
Iraq War ⓘ Korean War ⓘ Vietnam War ⓘ War in Afghanistan (2001–2021) ⓘ
surface form:
War in Afghanistan
World War I ⓘ World War II ⓘ |
| category |
Holidays related to military service
ⓘ
May observances in the United States ⓘ |
| commemorates | fallen U.S. service members ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dateFixedBy | Uniform Monday Holiday Act ⓘ |
| dayOffFor | most federal employees in the United States ⓘ |
| flagProtocol |
flag flown at half-staff until noon
ⓘ
flag raised to full-staff from noon to sunset ⓘ |
| frequency | annual ⓘ |
| governingLaw | Uniform Monday Holiday Act ⓘ |
| hasType |
military memorial day
ⓘ
remembrance day ⓘ |
| honors | United States Armed Forces members who died in military service ⓘ |
| isRelatedTo |
Armed Forces Day
ⓘ
Poppy Day ⓘ Armistice Day ⓘ
surface form:
Remembrance Day
United States Armed Forces ⓘ Armistice Day ⓘ
surface form:
Veterans Day
|
| languageOfName | English ⓘ |
| legalStatus | federal holiday in the United States ⓘ |
| marks | unofficial start of summer in the United States ⓘ |
| monthObserved | May ⓘ |
| NationalMomentOfRemembranceTime | 3:00 p.m. local time ⓘ |
| observanceChangeYear | 1971 ⓘ |
| observedIn |
United States of America
ⓘ
surface form:
United States
|
| observedOn |
Monday
ⓘ
last Monday of May ⓘ |
| originatedAs | Decoration Day ⓘ |
| originPeriod | after the American Civil War ⓘ |
| purpose | to honor U.S. military personnel who died in service ⓘ |
| significance | commemoration of U.S. military personnel who died while serving ⓘ |
| symbol |
United States flag
ⓘ
surface form:
American flag
poppy flower ⓘ |
| tradition |
National Moment of Remembrance
ⓘ
holding memorial services ⓘ parades ⓘ placing flags on graves of fallen service members ⓘ visiting cemeteries and memorials ⓘ |
| wasPreviouslyObservedOn | May 30 ⓘ |
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: Memorial Day Description of subject: Memorial Day is a U.S. federal holiday observed on the last Monday of May to honor and remember military personnel who have died in service to the country.
Referenced by (23)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Memorial Day weekend