D 950
E840344
D 950 is Franz Schubert’s expansive and deeply expressive Piano Sonata No. 21 in B-flat major, one of his final and most celebrated works for solo piano.
All labels observed (1)
| Label | Occurrences |
|---|---|
| D 950 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10067700 — 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: D 950 Context triple: [Mass No. 6 in E-flat major, catalogNumber, D 950]
-
A.
D 957
D 957 is the Deutsch catalogue number for Franz Schubert’s posthumously published song cycle "Schwanengesang."
-
B.
D910
D910 is a departmental road in France that serves as a key route connecting and passing through the commune of Ville-d'Avray in the Île-de-France region.
-
C.
D5
D5 is a commuter rail line within the Moscow Central Diameters network that serves as one of the key cross-city routes in the Moscow metropolitan area.
-
D.
D5
D5 is the fourth-generation Audi A8 luxury sedan platform, introduced with updated design, advanced technology, and improved performance over its predecessors.
-
E.
D 759
D 759 is the Deutsch catalogue number for Franz Schubert’s famous Symphony No. 8 in B minor, commonly known as the “Unfinished” Symphony.
- 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: D 950 Target entity description: D 950 is Franz Schubert’s expansive and deeply expressive Piano Sonata No. 21 in B-flat major, one of his final and most celebrated works for solo piano.
-
A.
D 957
D 957 is the Deutsch catalogue number for Franz Schubert’s posthumously published song cycle "Schwanengesang."
-
B.
D910
D910 is a departmental road in France that serves as a key route connecting and passing through the commune of Ville-d'Avray in the Île-de-France region.
-
C.
D5
D5 is a commuter rail line within the Moscow Central Diameters network that serves as one of the key cross-city routes in the Moscow metropolitan area.
-
D.
D5
D5 is the fourth-generation Audi A8 luxury sedan platform, introduced with updated design, advanced technology, and improved performance over its predecessors.
-
E.
D 759
D 759 is the Deutsch catalogue number for Franz Schubert’s famous Symphony No. 8 in B minor, commonly known as the “Unfinished” Symphony.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
musical composition
ⓘ
piano sonata ⓘ solo piano work ⓘ |
| catalogNumber | D 960 ⓘ |
| commonRecordingType | solo piano recording ⓘ |
| composer | Franz Schubert NERFINISHED ⓘ |
| composerLifePeriod | composed in the last year of Schubert’s life ⓘ |
| compositionPlace | Vienna NERFINISHED ⓘ |
| compositionYear | 1828 ⓘ |
| countryOfOrigin | Austria ⓘ |
| dedication | none (not dedicated in first edition) ⓘ |
| durationApproximate | 40–45 minutes ⓘ |
| endingKey | B-flat major ⓘ |
| expressiveCharacter |
deeply expressive
ⓘ
expansive ⓘ |
| firstPublication | posthumous ⓘ |
| genre | sonata ⓘ |
| hasThemeType |
contrasting second subject
ⓘ
lyrical first subject ⓘ |
| instrument | piano ⓘ |
| isAmong |
Schubert’s final piano works
ⓘ
Schubert’s most celebrated piano sonatas ⓘ |
| key | B-flat major ⓘ |
| language | instrumental ⓘ |
| movement |
I. Molto moderato
ⓘ
II. Andante sostenuto ⓘ III. Scherzo: Allegro vivace con delicatezza ⓘ IV. Allegro ma non troppo ⓘ |
| musicalEra | Romantic ⓘ |
| notableFeature |
expansive first movement
ⓘ
extended sonata form structures ⓘ lyrical slow movement ⓘ use of rich harmonic modulation ⓘ |
| numberOfMovements | 4 ⓘ |
| opusNumber | posth. ⓘ |
| performanceMedium | concert performance ⓘ |
| period | late Schubert NERFINISHED ⓘ |
| reception | highly regarded in the piano repertoire ⓘ |
| relatedWork |
Piano Sonata in A major, D 959
NERFINISHED
ⓘ
Piano Sonata in C minor, D 958 NERFINISHED ⓘ |
| scoring | solo piano ⓘ |
| set | Schubert’s last three piano sonatas ⓘ |
| structure | four-movement sonata ⓘ |
| style | late Classical–early Romantic ⓘ |
| title | Piano Sonata No. 21 in B-flat major NERFINISHED ⓘ |
| tonalCenter | B-flat major ⓘ |
| workNumberInSet | 3 ⓘ |
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: D 950 Description of subject: D 950 is Franz Schubert’s expansive and deeply expressive Piano Sonata No. 21 in B-flat major, one of his final and most celebrated works for solo piano.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.