Pentagon Memorial
E8110
The Pentagon Memorial is a national memorial in Arlington, Virginia, honoring the 184 victims who died in the September 11, 2001 attack on the Pentagon.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Pentagon Memorial canonical | 7 |
| National 9/11 Pentagon Memorial | 5 |
| September 11 Pentagon Memorial section | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3426 — 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: Pentagon Memorial Context triple: [Arlington, Virginia, contains, Pentagon Memorial]
-
A.
Air Force Memorial
The Air Force Memorial is a national monument in Arlington, Virginia, honoring the service and sacrifice of members of the United States Air Force through three soaring stainless-steel spires that evoke the flight of the Air Force Thunderbirds.
-
B.
Marine Corps War Memorial
The Marine Corps War Memorial is a monumental bronze sculpture near Arlington National Cemetery that depicts the iconic World War II flag-raising on Iwo Jima, honoring all U.S. Marine Corps personnel who have died in defense of the United States.
-
C.
Arlington National Cemetery
Arlington National Cemetery is a United States military cemetery and national memorial site where many American service members and notable figures are buried.
-
D.
USS Arizona Memorial
The USS Arizona Memorial is a World War II monument in Pearl Harbor, Hawaii, honoring the sailors and Marines who died aboard the battleship USS Arizona during the 1941 Japanese attack.
-
E.
Lincoln Memorial
The Lincoln Memorial is a monumental neoclassical temple in Washington, D.C., honoring the 16th U.S. president, Abraham Lincoln, and serving as a symbolic site for American civil rights and national unity.
- 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: Pentagon Memorial Target entity description: The Pentagon Memorial is a national memorial in Arlington, Virginia, honoring the 184 victims who died in the September 11, 2001 attack on the Pentagon.
-
A.
Air Force Memorial
The Air Force Memorial is a national monument in Arlington, Virginia, honoring the service and sacrifice of members of the United States Air Force through three soaring stainless-steel spires that evoke the flight of the Air Force Thunderbirds.
-
B.
Marine Corps War Memorial
The Marine Corps War Memorial is a monumental bronze sculpture near Arlington National Cemetery that depicts the iconic World War II flag-raising on Iwo Jima, honoring all U.S. Marine Corps personnel who have died in defense of the United States.
-
C.
Arlington National Cemetery
Arlington National Cemetery is a United States military cemetery and national memorial site where many American service members and notable figures are buried.
-
D.
USS Arizona Memorial
The USS Arizona Memorial is a World War II monument in Pearl Harbor, Hawaii, honoring the sailors and Marines who died aboard the battleship USS Arizona during the 1941 Japanese attack.
-
E.
Lincoln Memorial
The Lincoln Memorial is a monumental neoclassical temple in Washington, D.C., honoring the 16th U.S. president, Abraham Lincoln, and serving as a symbolic site for American civil rights and national unity.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
September 11 memorial
ⓘ
national memorial ⓘ |
| admissionFee | no ⓘ |
| architect |
Julie Beckman
ⓘ
Keith Kaseman ⓘ |
| architecturalFirm | Kaseman Beckman Advanced Strategies ⓘ |
| benchCount | 184 ⓘ |
| category |
Monuments and memorials in Virginia
ⓘ
September 11 attacks memorials ⓘ Tourist attractions in Arlington County, Virginia ⓘ |
| commemorates |
September 11 attacks
ⓘ
September 11, 2001 attack on the Pentagon ⓘ victims of terrorism ⓘ |
| coordinates | 38.8708°N 77.0582°W ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dedicatedTo | 184 victims who died in the September 11, 2001 attack on the Pentagon ⓘ |
| designer |
Julie Beckman
ⓘ
Keith Kaseman ⓘ |
| fundingSource |
federal funds
ⓘ
public donations ⓘ |
| hasPart |
184 memorial benches
ⓘ
age lines ⓘ illuminated reflecting pool ⓘ individual victim plaques ⓘ landscaped grounds ⓘ memorial benches ⓘ perimeter wall ⓘ |
| inception | 2001 ⓘ |
| lighting | benches illuminated at night ⓘ |
| locatedIn |
Arlington, Virginia
ⓘ
surface form:
Arlington County, Virginia
Arlington, Virginia ⓘ Pentagon ⓘ Pentagon ⓘ
surface form:
Pentagon Reservation
|
| maintainedBy |
Department of Defense
ⓘ
surface form:
United States Department of Defense
|
| materialUsed |
granite
ⓘ
gravel ⓘ stainless steel ⓘ |
| memorialType | outdoor memorial ⓘ |
| nearestCity | Washington, D.C. ⓘ |
| numberOfVictimsHonored | 184 ⓘ |
| openingDate | 2008-09-11 ⓘ |
| openToPublic | 24 hours daily ⓘ |
| owner |
Department of Defense
ⓘ
surface form:
United States Department of Defense
|
| publicAccess | yes ⓘ |
| theme | remembrance of 9/11 Pentagon victims ⓘ |
| victimAgeRange | 3 to 71 years ⓘ |
| website | https://pentagonmemorial.org/ ⓘ |
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: Pentagon Memorial Description of subject: The Pentagon Memorial is a national memorial in Arlington, Virginia, honoring the 184 victims who died in the September 11, 2001 attack on the Pentagon.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
September 11 Pentagon Memorial section
this entity surface form:
National 9/11 Pentagon Memorial
this entity surface form:
National 9/11 Pentagon Memorial
this entity surface form:
National 9/11 Pentagon Memorial
this entity surface form:
National 9/11 Pentagon Memorial
this entity surface form:
National 9/11 Pentagon Memorial