AREX
E467931
AREX is a South Korean airport railroad line that provides rapid rail transit between central Seoul and its major airports, including Gimpo and Incheon.
All labels observed (1)
| Label | Occurrences |
|---|---|
| AREX canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T4749888 — 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: AREX Context triple: [Gimpo International Airport, connectedBy, AREX]
-
A.
REX
REX is a radio science experiment instrument aboard NASA's New Horizons spacecraft used to study the atmospheres and surfaces of planetary bodies through radio signal measurements.
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B.
AKX
AKX is the IATA airport code for Aktobe International Airport in Aktobe, Kazakhstan.
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C.
ARCX
ARCX is the Market Identifier Code for the NYSE Arca exchange, an electronic securities trading platform operated by the New York Stock Exchange.
-
D.
Arcop
Arcop was a prominent Canadian architectural firm known for its modernist designs and major cultural and institutional projects across Canada.
-
E.
AXS
AXS is a digital ticketing and event management platform known for selling and distributing tickets for sports, concerts, and live entertainment 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: AREX Target entity description: AREX is a South Korean airport railroad line that provides rapid rail transit between central Seoul and its major airports, including Gimpo and Incheon.
-
A.
REX
REX is a radio science experiment instrument aboard NASA's New Horizons spacecraft used to study the atmospheres and surfaces of planetary bodies through radio signal measurements.
-
B.
AKX
AKX is the IATA airport code for Aktobe International Airport in Aktobe, Kazakhstan.
-
C.
ARCX
ARCX is the Market Identifier Code for the NYSE Arca exchange, an electronic securities trading platform operated by the New York Stock Exchange.
-
D.
Arcop
Arcop was a prominent Canadian architectural firm known for its modernist designs and major cultural and institutional projects across Canada.
-
E.
AXS
AXS is a digital ticketing and event management platform known for selling and distributing tickets for sports, concerts, and live entertainment events.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
airport rail link
ⓘ
railway line ⓘ rapid transit line ⓘ |
| abbreviationMeaning | Airport Railroad Express NERFINISHED ⓘ |
| connectsWith |
Gyeongui–Jungang Line
NERFINISHED
ⓘ
Seoul Metropolitan Subway Line 1 NERFINISHED ⓘ Seoul Metropolitan Subway Line 2 NERFINISHED ⓘ Seoul Metropolitan Subway Line 4 NERFINISHED ⓘ Seoul Metropolitan Subway Line 5 NERFINISHED ⓘ Seoul Metropolitan Subway Line 6 NERFINISHED ⓘ Seoul Metropolitan Subway Line 9 NERFINISHED ⓘ Suin–Bundang Line NERFINISHED ⓘ |
| country | South Korea ⓘ |
| electrification | AC 25 kV 60 Hz overhead line ⓘ |
| fareSystem | integrated with Seoul Metropolitan Subway fare system for all-stop trains ⓘ |
| fullNameKorean | 공항철도 NERFINISHED ⓘ |
| hasServiceType |
All-stop train
ⓘ
Express train ⓘ |
| hasStation |
Cheongna International City Station
NERFINISHED
ⓘ
Digital Media City Station NERFINISHED ⓘ Geombawi Station NERFINISHED ⓘ Gimpo International Airport Station NERFINISHED ⓘ Gongdeok Station NERFINISHED ⓘ Incheon International Airport Terminal 1 Station NERFINISHED ⓘ Incheon International Airport Terminal 2 Station NERFINISHED ⓘ Magongnaru Station NERFINISHED ⓘ Seoul Station NERFINISHED ⓘ Unseo Station NERFINISHED ⓘ Yeongjong Station NERFINISHED ⓘ |
| languageOfName | Korean ⓘ |
| lineLength | about 63 km ⓘ |
| locale | Seoul Capital Area NERFINISHED ⓘ |
| numberOfTracks | 2 ⓘ |
| opened | 2007 ⓘ |
| openedSection |
Gimpo International Airport–Incheon International Airport section
NERFINISHED
ⓘ
Seoul Station–Gimpo International Airport section NERFINISHED ⓘ |
| operator | Airport Railroad Co., Ltd. NERFINISHED ⓘ |
| owner | Korea Rail Network Authority NERFINISHED ⓘ |
| primaryFunction | airport access rail service ⓘ |
| purpose | provide rapid rail transit between central Seoul and major airports ⓘ |
| regionServed |
Gyeonggi Province
NERFINISHED
ⓘ
Incheon NERFINISHED ⓘ |
| rollingStock | EMU electric multiple units ⓘ |
| servesAirport |
Gimpo International Airport
NERFINISHED
ⓘ
Incheon International Airport NERFINISHED ⓘ |
| servesCity | Seoul NERFINISHED ⓘ |
| terminus |
Incheon International Airport Terminal 2 Station
NERFINISHED
ⓘ
Seoul Station NERFINISHED ⓘ |
| trackGauge | 1,435 mm ⓘ |
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: AREX Description of subject: AREX is a South Korean airport railroad line that provides rapid rail transit between central Seoul and its major airports, including Gimpo and Incheon.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Incheon Subway Line 1