Lake Lahontan
E565741
Lake Lahontan was a vast prehistoric pluvial lake that covered much of what is now northwestern Nevada during the Pleistocene epoch.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Lake Lahontan canonical | 6 |
| Pleistocene Lake Lahontan | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T6028601 — 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: Lake Lahontan Context triple: [Pleistocene Lake Lahontan basin, containsFormerLake, Lake Lahontan]
-
A.
Lake Bonneville
Lake Bonneville was a massive prehistoric pluvial lake that once covered much of present-day Utah and surrounding areas during the last Ice Age, leaving behind features such as the Great Salt Lake and prominent shoreline terraces.
-
B.
Pyramid Lake
Pyramid Lake is a scenic alpine lake in the Canadian Rockies, renowned for its clear waters, surrounding mountain views, and outdoor recreation opportunities.
-
C.
Pyramid Lake
Pyramid Lake is a large desert lake in northwestern Nevada known for its striking pyramid-shaped tufa formations and cultural significance to the Pyramid Lake Paiute Tribe.
-
D.
Pyramid Lake
Pyramid Lake is a man-made reservoir in Southern California’s Angeles National Forest, popular for boating, fishing, and camping.
-
E.
Mono Lake
Mono Lake is a large, ancient saline soda lake in eastern California renowned for its striking tufa towers, high salinity, and unique ecosystem supporting migratory birds and brine shrimp.
- 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: Lake Lahontan Target entity description: Lake Lahontan was a vast prehistoric pluvial lake that covered much of what is now northwestern Nevada during the Pleistocene epoch.
-
A.
Lake Bonneville
Lake Bonneville was a massive prehistoric pluvial lake that once covered much of present-day Utah and surrounding areas during the last Ice Age, leaving behind features such as the Great Salt Lake and prominent shoreline terraces.
-
B.
Pyramid Lake
Pyramid Lake is a scenic alpine lake in the Canadian Rockies, renowned for its clear waters, surrounding mountain views, and outdoor recreation opportunities.
-
C.
Pyramid Lake
Pyramid Lake is a large desert lake in northwestern Nevada known for its striking pyramid-shaped tufa formations and cultural significance to the Pyramid Lake Paiute Tribe.
-
D.
Pyramid Lake
Pyramid Lake is a man-made reservoir in Southern California’s Angeles National Forest, popular for boating, fishing, and camping.
-
E.
Mono Lake
Mono Lake is a large, ancient saline soda lake in eastern California renowned for its striking tufa towers, high salinity, and unique ecosystem supporting migratory birds and brine shrimp.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Pleistocene lake
ⓘ
pluvial lake ⓘ prehistoric lake ⓘ |
| basinCountry |
United States of America
ⓘ
surface form:
United States
|
| continent | North America ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| declineCause |
increased evaporation
ⓘ
postglacial warming ⓘ |
| drainageBasin | closed basin ⓘ |
| evidenceFrom |
lacustrine sediments
ⓘ
strandlines ⓘ tufa deposits ⓘ |
| existedDuring | last glacial maximum ⓘ |
| formedBy |
increased precipitation
ⓘ
reduced evaporation ⓘ |
| geologicEpoch | Pleistocene NERFINISHED ⓘ |
| geologicPeriod | Quaternary NERFINISHED ⓘ |
| hasGeomorphicImpact |
deposition of thick lacustrine sediments in western Nevada
ⓘ
playa formation in Black Rock Desert ⓘ |
| hasRemnant |
Black Rock Desert playa
NERFINISHED
ⓘ
Carson Sink NERFINISHED ⓘ Honey Lake NERFINISHED ⓘ Humboldt Sink NERFINISHED ⓘ Pyramid Lake NERFINISHED ⓘ Walker Lake NERFINISHED ⓘ |
| hydrologicType | endorheic lake system ⓘ |
| locatedIn |
Nevada
ⓘ
United States of America ⓘ
surface form:
United States
|
| locatedInPhysiographicProvince | Basin and Range Province NERFINISHED ⓘ |
| locatedInRegion | northwestern Nevada NERFINISHED ⓘ |
| maximumDepth | over 270 meters ⓘ |
| maximumExtent | approximately 22,300 square kilometers ⓘ |
| modernHydrologicRemnant |
Carson River–Carson Sink system
NERFINISHED
ⓘ
Humboldt River–Humboldt Sink system NERFINISHED ⓘ Truckee River–Pyramid Lake system NERFINISHED ⓘ Walker River–Walker Lake system NERFINISHED ⓘ |
| namedAfter | Louis-Armand de Lom d’Arce de Lahontan NERFINISHED ⓘ |
| notableLocality | Pyramid Lake tufa towers NERFINISHED ⓘ |
| paleoenvironment | cooler and wetter climate than present ⓘ |
| partOf | Great Basin NERFINISHED ⓘ |
| reachedHighstand | around 15,000 to 13,000 years ago ⓘ |
| relatedTo | Lake Bonneville NERFINISHED ⓘ |
| shorelineFeature |
tufa formations
ⓘ
wave-cut terraces ⓘ |
| status | extinct lake ⓘ |
| waterType | freshwater ⓘ |
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: Lake Lahontan Description of subject: Lake Lahontan was a vast prehistoric pluvial lake that covered much of what is now northwestern Nevada during the Pleistocene epoch.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Pleistocene Lake Lahontan