Triple
T19319148
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Ludwig Prandtl |
E483173
|
entity |
| Predicate | notableFor |
P22
|
FINISHED |
| Object |
Prandtl number
The Prandtl number is a dimensionless quantity in fluid mechanics and heat transfer that compares momentum diffusivity (viscosity) to thermal diffusivity, characterizing the relative thickness of velocity and thermal boundary layers.
|
E1369939
|
NE FINISHED |
How this triple was built (4 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Prandtl number | Statement: [Ludwig Prandtl, notableFor, Prandtl number]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Prandtl number Context triple: [Ludwig Prandtl, notableFor, Prandtl number]
-
A.
Nusselt number
The Nusselt number is a dimensionless quantity in heat transfer that measures the enhancement of heat transport by convection relative to pure conduction.
-
B.
Knudsen number
The Knudsen number is a dimensionless quantity in fluid dynamics that compares a gas’s molecular mean free path to a characteristic physical length scale, indicating whether continuum or rarefied flow models are appropriate.
-
C.
Reynolds number
The Reynolds number is a dimensionless quantity in fluid mechanics that characterizes the flow regime of a fluid, indicating whether it is laminar or turbulent based on the ratio of inertial to viscous forces.
-
D.
Chandrasekhar number
The Chandrasekhar number is a dimensionless quantity in magnetohydrodynamics that measures the relative importance of magnetic forces compared to viscous forces in a conducting fluid.
-
E.
Froude number
The Froude number is a dimensionless quantity in fluid dynamics that compares inertial forces to gravitational forces, commonly used to characterize flow regimes in open channels and around ships.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg
Description generation
gpt-5.1
Instruction
Generate a one-sentence description of the target entity. You are given a context triple in the form (subject, predicate, object), where the object is the target entity. # Instructions Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. Avoid repeating the information from the triple, unless really essential. # Response Format Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Prandtl number Triple: [Ludwig Prandtl, notableFor, Prandtl number]
Generated description
The Prandtl number is a dimensionless quantity in fluid mechanics and heat transfer that compares momentum diffusivity (viscosity) to thermal diffusivity, characterizing the relative thickness of velocity and thermal boundary layers.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Prandtl number Target entity description: The Prandtl number is a dimensionless quantity in fluid mechanics and heat transfer that compares momentum diffusivity (viscosity) to thermal diffusivity, characterizing the relative thickness of velocity and thermal boundary layers.
-
A.
Nusselt number
The Nusselt number is a dimensionless quantity in heat transfer that measures the enhancement of heat transport by convection relative to pure conduction.
-
B.
Knudsen number
The Knudsen number is a dimensionless quantity in fluid dynamics that compares a gas’s molecular mean free path to a characteristic physical length scale, indicating whether continuum or rarefied flow models are appropriate.
-
C.
Reynolds number
The Reynolds number is a dimensionless quantity in fluid mechanics that characterizes the flow regime of a fluid, indicating whether it is laminar or turbulent based on the ratio of inertial to viscous forces.
-
D.
Chandrasekhar number
The Chandrasekhar number is a dimensionless quantity in magnetohydrodynamics that measures the relative importance of magnetic forces compared to viscous forces in a conducting fluid.
-
E.
Froude number
The Froude number is a dimensionless quantity in fluid dynamics that compares inertial forces to gravitational forces, commonly used to characterize flow regimes in open channels and around ships.
- F. None of above. chosen
Provenance (5 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69d8e8d13e3c81909d91d1d5ec37c095 |
completed | April 10, 2026, 12:10 p.m. |
| NER | Named-entity recognition | batch_69e60d868dd48190b1439a5f4ff58c48 |
completed | April 20, 2026, 11:27 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_6a0714640aa481909bd6b1ca617f35a7 |
completed | May 15, 2026, 12:41 p.m. |
| NEDg | Description generation | batch_6a0714eb6a0c8190bec7ae8ef785a4ab |
completed | May 15, 2026, 12:43 p.m. |
| NED2 | Entity disambiguation (via description) | batch_6a0718ee8adc8190a74685f9783ba5d5 |
completed | May 15, 2026, 1 p.m. |
Created at: April 10, 2026, 1:32 p.m.