ELT
E302300
ELT is a next-generation ground-based optical and infrared telescope being built by the European Southern Observatory to become the world’s largest and most powerful visible-light telescope.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ELT canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2831003 — 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: ELT Context triple: [European Extremely Large Telescope, alsoKnownAs, ELT]
-
A.
EFL
EFL is a professional football league system in England that organizes and oversees the three divisions below the Premier League.
-
B.
English for Speakers of Other Languages
English for Speakers of Other Languages is an educational program designed to help non-native English speakers develop the language skills needed for academic success and everyday communication.
-
C.
English Bridge
English Bridge is a historic stone arch bridge spanning the River Severn in Shrewsbury, Shropshire, England.
-
D.
CET
CET is the standard time zone used by many countries in central Europe, typically one hour ahead of Coordinated Universal Time (UTC+1).
-
E.
ERT
ERT is an acronym commonly used to refer to an Emergency Response Team, a specialized group trained to react quickly and effectively to crises or hazardous incidents.
- 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: ELT Target entity description: ELT is a next-generation ground-based optical and infrared telescope being built by the European Southern Observatory to become the world’s largest and most powerful visible-light telescope.
-
A.
EFL
EFL is a professional football league system in England that organizes and oversees the three divisions below the Premier League.
-
B.
English for Speakers of Other Languages
English for Speakers of Other Languages is an educational program designed to help non-native English speakers develop the language skills needed for academic success and everyday communication.
-
C.
English Bridge
English Bridge is a historic stone arch bridge spanning the River Severn in Shrewsbury, Shropshire, England.
-
D.
CET
CET is the standard time zone used by many countries in central Europe, typically one hour ahead of Coordinated Universal Time (UTC+1).
-
E.
ERT
ERT is an acronym commonly used to refer to an Emergency Response Team, a specialized group trained to react quickly and effectively to crises or hazardous incidents.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical observatory instrument
ⓘ
ground-based telescope ⓘ infrared telescope ⓘ optical telescope ⓘ |
| abbreviationFor |
extremely large telescope
ⓘ
surface form:
Extremely Large Telescope
|
| adaptiveMirrorDesignation | M4 ⓘ |
| comparedTo | one of the world’s largest optical/infrared telescopes ⓘ |
| constructionStart | 2014 ⓘ |
| designConcept | extremely large telescope ⓘ |
| designedFor |
direct imaging of exoplanets
ⓘ
spectroscopy of faint distant objects ⓘ |
| fieldStabilizationMirrorDesignation | M5 ⓘ |
| fullName |
European Extremely Large Telescope
ⓘ
surface form:
Extremely Large Telescope
|
| fundingOrganization | ESO member states ⓘ |
| hasAdaptiveOptics | true ⓘ |
| locatedInContinent | South America ⓘ |
| locatedInCountry | Chile ⓘ |
| locatedInRegion | Atacama Desert ⓘ |
| location | Cerro Armazones ⓘ |
| mountType | alt-azimuth mount ⓘ |
| numberOfPrimaryMirrorSegments | 798 ⓘ |
| observatory |
ESO La Silla Paranal Observatory
ⓘ
surface form:
Paranal–Armazones Observatory
|
| operator | European Southern Observatory ⓘ |
| organization | European Southern Observatory ⓘ |
| partOfProgram |
ESO La Silla Paranal Observatory
ⓘ
surface form:
ESO Paranal–Armazones Observatory complex
|
| plannedFirstLight | late 2020s ⓘ |
| primaryMirrorDesignation | M1 ⓘ |
| primaryMirrorDiameter | 39 meters ⓘ |
| primaryMirrorShape | segmented ⓘ |
| primaryScienceStrength |
high angular resolution
ⓘ
high sensitivity ⓘ |
| scienceGoals |
cosmology and dark energy
ⓘ
planet formation ⓘ solar system studies ⓘ stellar astrophysics ⓘ study of exoplanets ⓘ study of first stars and galaxies ⓘ study of galaxy formation and evolution ⓘ |
| scienceInstrumentation | suite of first-light instruments ⓘ |
| secondaryMirrorDesignation | M2 ⓘ |
| siteAltitude | approximately 3046 meters above sea level ⓘ |
| status | under construction ⓘ |
| telescopeType |
infrared
ⓘ
optical ⓘ |
| tertiaryMirrorDesignation | M3 ⓘ |
| wavelengthRange |
mid-infrared
ⓘ
near-infrared ⓘ visible light ⓘ |
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: ELT Description of subject: ELT is a next-generation ground-based optical and infrared telescope being built by the European Southern Observatory to become the world’s largest and most powerful visible-light telescope.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.