Coalsack Nebula (on its border)
E533145
Coalsack Nebula (on its border) is a prominent dark nebula visible to the naked eye in the southern sky, appearing as a large, starless patch silhouetted against the Milky Way.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Coalsack Nebula (on its border) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5567783 — 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: Coalsack Nebula (on its border) Context triple: [Southern Cross, contains, Coalsack Nebula (on its border)]
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A.
Barnard's Loop
Barnard's Loop is a large, faint emission nebula forming a sweeping arc across the constellation Orion, believed to be the remnant of ancient supernova activity.
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B.
Pelican Nebula
The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
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C.
Horsehead Nebula
The Horsehead Nebula is a dark molecular cloud in the constellation Orion, famous for its distinctive horse-head shape silhouetted against a bright emission nebula.
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D.
Swan Nebula
The Swan Nebula, also known as M17 or the Omega Nebula, is a bright star-forming emission nebula in the constellation Sagittarius, rich in gas, dust, and young massive stars.
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E.
Carina Nebula
The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
- 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: Coalsack Nebula (on its border) Target entity description: Coalsack Nebula (on its border) is a prominent dark nebula visible to the naked eye in the southern sky, appearing as a large, starless patch silhouetted against the Milky Way.
-
A.
Barnard's Loop
Barnard's Loop is a large, faint emission nebula forming a sweeping arc across the constellation Orion, believed to be the remnant of ancient supernova activity.
-
B.
Pelican Nebula
The Pelican Nebula is a bright emission nebula in the constellation Cygnus, notable for its bird-like shape and active star-forming regions.
-
C.
Horsehead Nebula
The Horsehead Nebula is a dark molecular cloud in the constellation Orion, famous for its distinctive horse-head shape silhouetted against a bright emission nebula.
-
D.
Swan Nebula
The Swan Nebula, also known as M17 or the Omega Nebula, is a bright star-forming emission nebula in the constellation Sagittarius, rich in gas, dust, and young massive stars.
-
E.
Carina Nebula
The Carina Nebula is a vast, active star-forming region in the Milky Way known for its towering gas and dust pillars and dramatic young stellar clusters.
- F. None of above. chosen
Statements (11)
| Predicate | Object |
|---|---|
| instanceOf | dark nebula ⓘ |
| appearsAs | large starless patch ⓘ |
| associatedWith | constellation Crux ⓘ |
| borderedBy | bright Milky Way star fields ⓘ |
| locatedIn | southern sky ⓘ |
| notableFor | high contrast dark region against bright Milky Way background ⓘ |
| observedAs | prominent dark patch in constellation Crux ⓘ |
| partOf | Milky Way galaxy NERFINISHED ⓘ |
| silhouettedAgainst | Milky Way NERFINISHED ⓘ |
| visibleFrom | Southern Hemisphere NERFINISHED ⓘ |
| visibleTo | naked eye ⓘ |
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: Coalsack Nebula (on its border) Description of subject: Coalsack Nebula (on its border) is a prominent dark nebula visible to the naked eye in the southern sky, appearing as a large, starless patch silhouetted against the Milky Way.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Southern Cross