ER4
E236968
ER4 is the IATA aircraft type designator used for the Embraer ERJ 145 regional jet.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ER4 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2144832 — 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: ER4 Context triple: [Embraer ERJ 145, IATADesignator, ER4]
-
A.
RE8
The RE8 was a British World War I two-seat reconnaissance and artillery observation biplane widely used by Allied air services.
-
B.
ERL
ERL is a research facility focused on studying and developing technologies for the exploration, monitoring, and management of Earth's natural resources.
-
C.
ER
ER is the vehicle registration code assigned to the German city of Erlangen in the state of Bavaria.
-
D.
ER
ER is a critically acclaimed American medical drama television series that follows the personal and professional lives of staff in a busy Chicago emergency room.
-
E.
ER
ER is the commonly used abbreviation for United Russia, the dominant ruling political party in the Russian Federation.
- 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: ER4 Target entity description: ER4 is the IATA aircraft type designator used for the Embraer ERJ 145 regional jet.
-
A.
RE8
The RE8 was a British World War I two-seat reconnaissance and artillery observation biplane widely used by Allied air services.
-
B.
ERL
ERL is a research facility focused on studying and developing technologies for the exploration, monitoring, and management of Earth's natural resources.
-
C.
ER
ER is the vehicle registration code assigned to the German city of Erlangen in the state of Bavaria.
-
D.
ER
ER is a critically acclaimed American medical drama television series that follows the personal and professional lives of staff in a busy Chicago emergency room.
-
E.
ER
ER is the commonly used abbreviation for United Russia, the dominant ruling political party in the Russian Federation.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
IATA aircraft type code
ⓘ
aircraft type designator ⓘ |
| aircraftEngineMounting | rear-fuselage mounted ⓘ |
| aircraftEngineType | turbofan ⓘ |
| aircraftFuselageType | narrow-body ⓘ |
| aircraftLandingGearType | tricycle landing gear ⓘ |
| aircraftManufacturer | Embraer ⓘ |
| aircraftMaximumEngines | 2 ⓘ |
| aircraftRangeClass | short to medium range ⓘ |
| aircraftRole |
passenger transport
ⓘ
regional airliner ⓘ |
| aircraftTypeCategory | regional jet ⓘ |
| aircraftWingConfiguration | low-wing ⓘ |
| appliesToAircraftFamily |
Embraer ERJ 145 family
ⓘ
linked to:
Embraer ERJ 145
|
| appliesToAircraftModel | Embraer ERJ 145 ⓘ |
| associatedWithICAOTypeDesignator | E145 ⓘ |
| countryOfOriginOfAircraft | Brazil ⓘ |
| operatedBy | various regional airlines worldwide ⓘ |
| relatedTo |
Embraer ERJ family
ⓘ
linked to:
Embraer ERJ 145
|
| typicalPassengerCapacityRange | about 45–50 passengers ⓘ |
| usedBy | International Air Transport Association ⓘ |
| usedFor | identifying aircraft type in commercial operations ⓘ |
| usedIn |
airline schedules
ⓘ
global distribution systems ⓘ reservation systems ⓘ |
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: ER4 Description of subject: ER4 is the IATA aircraft type designator used for the Embraer ERJ 145 regional jet.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.