Triple

T12049353
Position Surface form Disambiguated ID Type / Status
Subject Mendenhall River E286873 entity
Predicate partOf P40 FINISHED
Object Mendenhall Glacier–Mendenhall Lake–Mendenhall River system
The Mendenhall Glacier–Mendenhall Lake–Mendenhall River system is an interconnected glacial landscape near Juneau, Alaska, where meltwater from the Mendenhall Glacier feeds Mendenhall Lake and flows out through the Mendenhall River to the sea.
 E962326 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: Mendenhall Glacier–Mendenhall Lake–Mendenhall River system | Statement: [Mendenhall River, partOf, Mendenhall Glacier–Mendenhall Lake–Mendenhall River system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Mendenhall Glacier–Mendenhall Lake–Mendenhall River system
Context triple: [Mendenhall River, partOf, Mendenhall Glacier–Mendenhall Lake–Mendenhall River system]
  • A. Mendenhall Glacier
    Mendenhall Glacier is a 13-mile-long valley glacier in the Tongass National Forest of southeast Alaska, renowned for its striking blue ice, accessible visitor center, and dramatic retreat due to climate change.
  • B. Kennicott Glacier
    Kennicott Glacier is a large valley glacier in Alaska’s Wrangell Mountains, known for its striking ice formations, historic mining-era surroundings, and accessibility to hikers and climbers.
  • C. Quinault Glacier
    Quinault Glacier is a mountain glacier in Washington State’s Olympic Mountains that feeds the headwaters of the Quinault River.
  • D. Mendenhall River
    The Mendenhall River is a glacially fed river in Juneau, Alaska, that flows from Mendenhall Lake toward the Gastineau Channel.
  • E. Mendenhall Glacier Falls
    Mendenhall Glacier Falls is a scenic waterfall in Juneau, Alaska, that cascades into Mendenhall Lake near the face of the Mendenhall Glacier and is a popular spot for visitors to the Mendenhall Glacier Recreation Area.
  • 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: Mendenhall Glacier–Mendenhall Lake–Mendenhall River system
Triple: [Mendenhall River, partOf, Mendenhall Glacier–Mendenhall Lake–Mendenhall River system]
Generated description
The Mendenhall Glacier–Mendenhall Lake–Mendenhall River system is an interconnected glacial landscape near Juneau, Alaska, where meltwater from the Mendenhall Glacier feeds Mendenhall Lake and flows out through the Mendenhall River to the sea.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Mendenhall Glacier–Mendenhall Lake–Mendenhall River system
Target entity description: The Mendenhall Glacier–Mendenhall Lake–Mendenhall River system is an interconnected glacial landscape near Juneau, Alaska, where meltwater from the Mendenhall Glacier feeds Mendenhall Lake and flows out through the Mendenhall River to the sea.
  • A. Mendenhall Glacier
    Mendenhall Glacier is a 13-mile-long valley glacier in the Tongass National Forest of southeast Alaska, renowned for its striking blue ice, accessible visitor center, and dramatic retreat due to climate change.
  • B. Kennicott Glacier
    Kennicott Glacier is a large valley glacier in Alaska’s Wrangell Mountains, known for its striking ice formations, historic mining-era surroundings, and accessibility to hikers and climbers.
  • C. Quinault Glacier
    Quinault Glacier is a mountain glacier in Washington State’s Olympic Mountains that feeds the headwaters of the Quinault River.
  • D. Mendenhall River
    The Mendenhall River is a glacially fed river in Juneau, Alaska, that flows from Mendenhall Lake toward the Gastineau Channel.
  • E. Mendenhall Glacier Falls
    Mendenhall Glacier Falls is a scenic waterfall in Juneau, Alaska, that cascades into Mendenhall Lake near the face of the Mendenhall Glacier and is a popular spot for visitors to the Mendenhall Glacier Recreation Area.
  • 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_69d6ab4780948190bdb9f7620c2ac27e completed April 8, 2026, 7:23 p.m.
NER Named-entity recognition batch_69d904227958819084dbd5eb2566c735 completed April 10, 2026, 2:07 p.m.
NED1 Entity disambiguation (via context triple) batch_69f49dd140a48190844f64c228e6367a completed May 1, 2026, 12:34 p.m.
NEDg Description generation batch_69f53d95d4fc8190b5f4e460646bec2a completed May 1, 2026, 11:56 p.m.
NED2 Entity disambiguation (via description) batch_69f564ed64008190bfbeaf0991a7c2b8 completed May 2, 2026, 2:43 a.m.
Created at: April 8, 2026, 9:47 p.m.