Triple
T19319147
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Ludwig Prandtl |
E483173
|
entity |
| Predicate | notableFor |
P22
|
FINISHED |
| Object | Prandtl boundary layer |
—
|
NE NERFINISHED |
How this triple was built (3 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 boundary layer | Statement: [Ludwig Prandtl, notableFor, Prandtl boundary layer]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Prandtl boundary layer Context triple: [Ludwig Prandtl, notableFor, Prandtl boundary layer]
-
A.
Navier boundary condition
The Navier boundary condition is a fluid mechanics boundary condition that allows for partial slip of a fluid along a solid surface, relating the tangential velocity at the boundary to the shear stress via a slip length.
-
B.
Blasius
Blasius is a Latinized form of the given name Blaise, historically associated with Christian saints and scholars.
-
C.
Navier–Stokes equations
The Navier–Stokes equations are fundamental partial differential equations in fluid mechanics that describe how the velocity field of a fluid evolves under forces like pressure and viscosity.
-
D.
Stokes hypothesis in fluid mechanics
The Stokes hypothesis in fluid mechanics is an assumption relating the bulk viscosity of a Newtonian fluid to its shear viscosity, simplifying the constitutive equations used to model viscous flows.
-
E.
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.
- 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: Prandtl boundary layer Target entity description: The Prandtl boundary layer is a fundamental fluid mechanics concept describing the thin region near a solid surface where viscous effects dominate and velocity changes rapidly from zero at the wall to the free-stream value.
-
A.
Navier boundary condition
The Navier boundary condition is a fluid mechanics boundary condition that allows for partial slip of a fluid along a solid surface, relating the tangential velocity at the boundary to the shear stress via a slip length.
-
B.
Blasius
Blasius is a Latinized form of the given name Blaise, historically associated with Christian saints and scholars.
-
C.
Navier–Stokes equations
The Navier–Stokes equations are fundamental partial differential equations in fluid mechanics that describe how the velocity field of a fluid evolves under forces like pressure and viscosity.
-
D.
Stokes hypothesis in fluid mechanics
The Stokes hypothesis in fluid mechanics is an assumption relating the bulk viscosity of a Newtonian fluid to its shear viscosity, simplifying the constitutive equations used to model viscous flows.
-
E.
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.
- F. None of above. chosen
Provenance (2 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. |
Created at: April 10, 2026, 1:32 p.m.