U.S. Open
E25298
The U.S. Open is one of golf’s four major championships, organized annually by the United States Golf Association and known for its challenging course setups and elite international field.
All labels observed (9)
| Label | Occurrences |
|---|---|
| U.S. Open canonical | 11 |
| U.S. Open (golf) | 3 |
| 1895 U.S. Open | 1 |
| 1939 U.S. Open | 1 |
| 2008 U.S. Open | 1 |
| 2011 U.S. Open | 1 |
| 2021 U.S. Open | 1 |
| U.S. Open (golf, historical) | 1 |
| United States Open Championship | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T199815 — 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: U.S. Open Context triple: [Byron Nelson, wonTournament, U.S. Open]
-
A.
Rose Bowl
The Rose Bowl is a historic college football stadium and annual bowl game in Pasadena, California, often called "The Granddaddy of Them All" and now a key part of the College Football Playoff.
-
B.
U.S. Open Cup
The U.S. Open Cup is the oldest ongoing national soccer tournament in the United States, featuring a knockout competition among professional and amateur clubs from across the American soccer pyramid.
-
C.
World Series
The World Series is the annual championship series of Major League Baseball in North America, determining the league's overall champion.
-
D.
Madison Square Garden
Madison Square Garden is a famous multi-purpose indoor arena in New York City known for hosting major sports events, concerts, and entertainment spectacles.
-
E.
Hudson River Derby
The Hudson River Derby is the fiercely contested soccer rivalry between New York City FC and the New York Red Bulls in Major League Soccer.
- 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: U.S. Open Target entity description: The U.S. Open is one of golf’s four major championships, organized annually by the United States Golf Association and known for its challenging course setups and elite international field.
-
A.
Rose Bowl
The Rose Bowl is a historic college football stadium and annual bowl game in Pasadena, California, often called "The Granddaddy of Them All" and now a key part of the College Football Playoff.
-
B.
U.S. Open Cup
The U.S. Open Cup is the oldest ongoing national soccer tournament in the United States, featuring a knockout competition among professional and amateur clubs from across the American soccer pyramid.
-
C.
World Series
The World Series is the annual championship series of Major League Baseball in North America, determining the league's overall champion.
-
D.
Madison Square Garden
Madison Square Garden is a famous multi-purpose indoor arena in New York City known for hosting major sports events, concerts, and entertainment spectacles.
-
E.
Hudson River Derby
The Hudson River Derby is the fiercely contested soccer rivalry between New York City FC and the New York Red Bulls in Major League Soccer.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
golf tournament
ⓘ
major golf championship ⓘ |
| alsoKnownAs |
U.S. Open
ⓘ
surface form:
United States Open Championship
|
| amateurRequirement | low USGA handicap index ⓘ |
| category |
men's professional golf tournament
ⓘ
open championship ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| courseSetupCharacteristic |
difficult pin positions
ⓘ
fast greens ⓘ high overall difficulty ⓘ narrow fairways ⓘ thick rough ⓘ |
| cutFormat | 36-hole cut ⓘ |
| eligibility |
amateurs
ⓘ
professionals ⓘ |
| fieldType | elite international field ⓘ |
| firstHeld | 1895 ⓘ |
| format | stroke play ⓘ |
| foundingCity | Newport ⓘ |
| foundingLocation | Newport Country Club ⓘ |
| foundingState | Rhode Island ⓘ |
| frequency | annual ⓘ |
| genderCategory | men's ⓘ |
| governingBody | United States Golf Association ⓘ |
| majorStatus | one of the four men's major golf championships ⓘ |
| notableFeature |
organized directly by the national governing body rather than a tour
ⓘ
rotates among different courses in the United States ⓘ |
| numberOfRounds | 4 ⓘ |
| organizer |
United States Golf Association
ⓘ
surface form:
USGA
United States Golf Association ⓘ |
| organizingBodyType | national golf association ⓘ |
| otherMajors |
Masters Tournament
ⓘ
PGA Championship ⓘ The Open Championship ⓘ |
| partOf | men's major golf championships ⓘ |
| playoffFormatCurrent | two-hole aggregate playoff ⓘ |
| playoffFormatHistory | 18-hole playoff (traditional) ⓘ |
| qualificationSystem |
exemptions based on rankings and achievements
ⓘ
open qualifying ⓘ sectional qualifying ⓘ |
| rankingPoints | awards significant Official World Golf Ranking points ⓘ |
| reputation | one of the most challenging tournaments in golf ⓘ |
| roundsDuration | 72 holes ⓘ |
| scope | international ⓘ |
| sport | golf ⓘ |
| tourAssociation |
European Tour
ⓘ
Japan Golf Tour (co-sanctioned historically for some exemptions) ⓘ PGA Tour ⓘ |
| typicalStartMonth | June ⓘ |
| typicalWinningScoreRelativeToPar | around par or slightly over par ⓘ |
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: U.S. Open Description of subject: The U.S. Open is one of golf’s four major championships, organized annually by the United States Golf Association and known for its challenging course setups and elite international field.
Referenced by (21)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
1939 U.S. Open
this entity surface form:
U.S. Open (golf, historical)
subject surface form:
Byron Nelson
subject surface form:
U.S. Open (golf)
this entity surface form:
United States Open Championship
subject surface form:
Michael Reid (golfer)
this entity surface form:
U.S. Open (golf)
this entity surface form:
2008 U.S. Open
this entity surface form:
2021 U.S. Open
this entity surface form:
U.S. Open (golf)
subject surface form:
Medinah Country Club
this entity surface form:
1895 U.S. Open
this entity surface form:
U.S. Open (golf)
this entity surface form:
2011 U.S. Open