MetLife Dome
E626917
MetLife Dome is a partially enclosed baseball stadium in Tokorozawa, Saitama, Japan, best known as the longtime home field of the Saitama Seibu Lions of Nippon Professional Baseball.
All labels observed (2)
| Label | Occurrences |
|---|---|
| MetLife Dome canonical | 3 |
| MetLife Dome complex | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6883875 — 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: MetLife Dome Context triple: [Saitama Seibu Lions, homeStadiumFormerName, MetLife Dome]
-
A.
RCA Dome
The RCA Dome was a large indoor stadium in Indianapolis, Indiana, best known for hosting NFL games and major sporting events before its demolition.
-
B.
WIN Stadium
WIN Stadium is a coastal multi-purpose sports venue in Wollongong, New South Wales, best known as the home ground of the St George Illawarra Dragons rugby league team.
-
C.
Trans World Dome
Trans World Dome was an indoor stadium in St. Louis best known as the home of the high-powered St. Louis Rams teams of the late 1990s and early 2000s.
-
D.
Icahn Stadium
Icahn Stadium is a premier outdoor track-and-field and multi-purpose sports venue in New York City known for hosting major athletic competitions and events.
-
E.
Meadowlands Arena
Meadowlands Arena is a now-closed indoor sports and entertainment venue in East Rutherford, New Jersey, that formerly hosted the NBA’s New Jersey Nets, the NHL’s New Jersey Devils, and major concerts and events.
- 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: MetLife Dome Target entity description: MetLife Dome is a partially enclosed baseball stadium in Tokorozawa, Saitama, Japan, best known as the longtime home field of the Saitama Seibu Lions of Nippon Professional Baseball.
-
A.
RCA Dome
The RCA Dome was a large indoor stadium in Indianapolis, Indiana, best known for hosting NFL games and major sporting events before its demolition.
-
B.
WIN Stadium
WIN Stadium is a coastal multi-purpose sports venue in Wollongong, New South Wales, best known as the home ground of the St George Illawarra Dragons rugby league team.
-
C.
Trans World Dome
Trans World Dome was an indoor stadium in St. Louis best known as the home of the high-powered St. Louis Rams teams of the late 1990s and early 2000s.
-
D.
Icahn Stadium
Icahn Stadium is a premier outdoor track-and-field and multi-purpose sports venue in New York City known for hosting major athletic competitions and events.
-
E.
Meadowlands Arena
Meadowlands Arena is a now-closed indoor sports and entertainment venue in East Rutherford, New Jersey, that formerly hosted the NBA’s New Jersey Nets, the NHL’s New Jersey Devils, and major concerts and events.
- F. None of above. chosen
Statements (42)
| Predicate | Object |
|---|---|
| instanceOf |
baseball stadium
ⓘ
stadium with retractable roof ⓘ |
| alsoUsedFor |
concerts
ⓘ
other sporting events ⓘ |
| architecturalStyle | domed stadium ⓘ |
| city | Tokorozawa ⓘ |
| climateCharacteristic | exposed to outside temperature due to open sides ⓘ |
| country | Japan ⓘ |
| formerName |
Seibu Dome
ⓘ
Seibu Lions Stadium ⓘ
linked to:
Seibu Dome
|
| hasCategory |
Baseball venues in Japan
ⓘ
Domes in Japan ⓘ Indoor arenas in Japan ⓘ Nippon Professional Baseball venues ⓘ Sports venues in Saitama Prefecture ⓘ |
| hasFieldOrientation | traditional baseball diamond layout ⓘ |
| hasLighting | stadium floodlights ⓘ |
| hasScoreboard | large video scoreboard ⓘ |
| hasScoreboardType | electronic ⓘ |
| homeFieldSince | 1980s ⓘ |
| homeStadiumOf |
Nippon Professional Baseball team
ⓘ
Saitama Seibu Lions ⓘ |
| league | Nippon Professional Baseball ⓘ |
| location |
Tokorozawa, Saitama Prefecture, Japan
ⓘ
linked to:
Tokorozawa, Saitama Prefecture
|
| namedAfter |
MetLife insurance company
ⓘ
linked to:
MetLife
|
| notableFeature |
domed roof without full wall enclosure
ⓘ
partially enclosed design with open sides ⓘ |
| opened | 1979 ⓘ |
| operator |
Seibu Lions
ⓘ
linked to:
Saitama Seibu Lions
|
| owner | Seibu Railway ⓘ |
| prefecture | Saitama Prefecture ⓘ |
| primaryUse | baseball ⓘ |
| publicTransit | Seibu Kyūjō-mae Station ⓘ |
| region | Kantō region ⓘ |
| renovated | 1999 ⓘ |
| roofCompleted | 1999 ⓘ |
| seatingCapacity | around 33,000 ⓘ |
| sponsor |
MetLife
ⓘ
linked to:
Metropolitan Life Insurance Company
|
| surface | artificial turf ⓘ |
| tenant | Saitama Seibu Lions ⓘ |
| usedForEvent |
Nippon Professional Baseball games
ⓘ
Pacific League games ⓘ |
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: MetLife Dome Description of subject: MetLife Dome is a partially enclosed baseball stadium in Tokorozawa, Saitama, Japan, best known as the longtime home field of the Saitama Seibu Lions of Nippon Professional Baseball.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: MetLife Dome