Greensand
E364109
Greensand is a glauconite-rich, greenish sandstone commonly found in southern England, valued both as a geological marker and historically as a soil conditioner.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Greensand canonical | 2 |
| Greensand geological formation | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3500363 — 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: Greensand Context triple: [Devil’s Punch Bowl area (on adjacent Greensand), locatedOn, Greensand]
-
A.
Talx
Talx is a workforce solutions and employment verification company that operates as a subsidiary of the credit reporting agency Equifax.
-
B.
Areia
Areia is a historic colonial-era city in the Brazilian state of Paraíba, known for its preserved architecture and cultural heritage.
-
C.
Hinderclay
Hinderclay is a small rural village and civil parish located in the county of Suffolk in eastern England.
-
D.
Millstone Grit
Millstone Grit is a coarse-grained Carboniferous sandstone formation in northern England, notably forming the rugged moorland landscapes of the Pennines.
-
E.
Quartz
Quartz is a digital news outlet known for its global business journalism, data-driven reporting, and mobile-first storytelling.
- 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: Greensand Target entity description: Greensand is a glauconite-rich, greenish sandstone commonly found in southern England, valued both as a geological marker and historically as a soil conditioner.
-
A.
Talx
Talx is a workforce solutions and employment verification company that operates as a subsidiary of the credit reporting agency Equifax.
-
B.
Areia
Areia is a historic colonial-era city in the Brazilian state of Paraíba, known for its preserved architecture and cultural heritage.
-
C.
Hinderclay
Hinderclay is a small rural village and civil parish located in the county of Suffolk in eastern England.
-
D.
Millstone Grit
Millstone Grit is a coarse-grained Carboniferous sandstone formation in northern England, notably forming the rugged moorland landscapes of the Pennines.
-
E.
Quartz
Quartz is a digital news outlet known for its global business journalism, data-driven reporting, and mobile-first storytelling.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
sandstone
ⓘ
sedimentary rock ⓘ |
| formsGeologicalUnit |
Lower Greensand
ⓘ
Upper Greensand ⓘ |
| hasAlternativeName |
glauconitic sandstone
ⓘ
greensandstone ⓘ |
| hasColor |
dark green
ⓘ
greenish ⓘ olive-green ⓘ |
| hasComponent |
clay minerals
ⓘ
feldspar ⓘ iron minerals ⓘ phosphatic nodules ⓘ quartz ⓘ |
| hasGeologicalAge |
Cretaceous
ⓘ
surface form:
Cretaceous period
|
| hasGrainSize | sand-sized grains ⓘ |
| hasHistoricalUse |
fertilizer in agriculture
ⓘ
soil conditioner in southern England ⓘ top-dressing for fields ⓘ |
| hasMainConstituent | glauconite ⓘ |
| hasPermeability | moderate permeability ⓘ |
| hasPorosity | relatively high porosity ⓘ |
| hasProperty |
chemically reactive in marine diagenetic environments
ⓘ
slowly releases nutrients ⓘ |
| hasTexture | sandstone texture ⓘ |
| hasTypicalEnvironmentOfDeposition |
continental shelf
ⓘ
low-oxygen marine environment ⓘ shallow marine shelf ⓘ |
| isAssociatedWith |
glauconitic sandstone facies
ⓘ
marine transgressive systems ⓘ |
| isIndicatorOf |
marine shelf conditions
ⓘ
slow sedimentation rates ⓘ |
| isNamedFor | its green color ⓘ |
| isPartOf | Cretaceous stratigraphy of southern England ⓘ |
| isRichIn |
iron
ⓘ
magnesium ⓘ potassium ⓘ trace elements ⓘ |
| isUsedAs |
geological marker bed
ⓘ
stratigraphic marker ⓘ |
| isUsedFor |
improving soil structure
ⓘ
improving water retention in soils ⓘ soil amendment ⓘ soil conditioner ⓘ source of slow-release potassium in agriculture ⓘ |
| occursInRegion |
Weald Basin
ⓘ
Wessex Basin ⓘ southern England ⓘ |
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: Greensand Description of subject: Greensand is a glauconite-rich, greenish sandstone commonly found in southern England, valued both as a geological marker and historically as a soil conditioner.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Greensand geological formation