BD+30 540
E459043
BD+30 540 is a young, massive star located in the Perseus OB2 stellar association, a nearby group of hot, luminous OB-type stars in the constellation Perseus.
All labels observed (1)
| Label | Occurrences |
|---|---|
| BD+30 540 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4617657 — 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: BD+30 540 Context triple: [Perseus OB2 association, hasMember, BD+30 540]
-
A.
BD+
BD+ is an additional digital rights management and content protection system used on Blu-ray Discs to prevent unauthorized copying and tampering.
-
B.
BdM
BdM is the central bank of Mexico, responsible for maintaining the country’s monetary stability and issuing its currency.
-
C.
A30B
A30B is the ICAO aircraft type designator used to identify the Airbus A300 in aviation operations and documentation.
-
D.
BB-36
BB-36 is the hull classification symbol for USS Nevada, a U.S. Navy battleship notable for its service during both World Wars and survival of the Pearl Harbor attack.
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E.
MIB30
MIB30 was a former benchmark stock market index of the Italian equity market, comprising 30 of the most liquid and capitalized companies listed on the Borsa Italiana.
- 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: BD+30 540 Target entity description: BD+30 540 is a young, massive star located in the Perseus OB2 stellar association, a nearby group of hot, luminous OB-type stars in the constellation Perseus.
-
A.
BD+
BD+ is an additional digital rights management and content protection system used on Blu-ray Discs to prevent unauthorized copying and tampering.
-
B.
BdM
BdM is the central bank of Mexico, responsible for maintaining the country’s monetary stability and issuing its currency.
-
C.
A30B
A30B is the ICAO aircraft type designator used to identify the Airbus A300 in aviation operations and documentation.
-
D.
BB-36
BB-36 is the hull classification symbol for USS Nevada, a U.S. Navy battleship notable for its service during both World Wars and survival of the Pearl Harbor attack.
-
E.
MIB30
MIB30 was a former benchmark stock market index of the Italian equity market, comprising 30 of the most liquid and capitalized companies listed on the Borsa Italiana.
- F. None of above. chosen
Statements (19)
| Predicate | Object |
|---|---|
| instanceOf |
OB association
ⓘ
OB-type star ⓘ massive star ⓘ star ⓘ young star ⓘ |
| catalog | Bonner Durchmusterung ⓘ |
| hasHighLuminosity | true ⓘ |
| hasHighMass | true ⓘ |
| hasStellarAssociation | OB association ⓘ |
| hasStellarPopulation | Population I ⓘ |
| isHotStar | true ⓘ |
| isNearbyAssociationMember | true ⓘ |
| isYoungStar | true ⓘ |
| locatedIn |
Perseus OB2 association
ⓘ
constellation Perseus ⓘ |
| locatedInConstellation | Perseus ⓘ |
| memberOf | Perseus OB2 association ⓘ |
| partOf | Milky Way ⓘ |
| spectralClass | OB ⓘ |
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: BD+30 540 Description of subject: BD+30 540 is a young, massive star located in the Perseus OB2 stellar association, a nearby group of hot, luminous OB-type stars in the constellation Perseus.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.