Triple

T18303939

Position	Surface form	Disambiguated ID	Type / Status
Subject	Penobscot River Restoration Project	`E438433`	entity
Predicate	modifies	`P1121`	FINISHED
Object	Howland Dam	`—`	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: Howland Dam | Statement: [Penobscot River Restoration Project, modifies, Howland Dam]

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Howland Dam
Context triple: [Penobscot River Restoration Project, modifies, Howland Dam]

A. LaBarge Dam
LaBarge Dam is a small hydroengineering structure located on the Thornapple River in Michigan, used primarily for water level control and local recreation.
B. Gathright Dam
Gathright Dam is a large earthen dam in western Virginia that creates Lake Moomaw and provides flood control and recreation in the Jackson River basin.
C. Waddell Dam
Waddell Dam is a major dam in Arizona that impounds the Agua Fria River to form Lake Pleasant, a key water storage and recreation reservoir for the Phoenix metropolitan area.
D. O’Neill Dam
O’Neill Dam is an earthfill embankment dam in California that forms the O’Neill Forebay as part of the state’s Central Valley Project water storage and conveyance system.
E. Fengman Dam
Fengman Dam is a large hydroelectric gravity dam on the Songhua River in Jilin Province, China, known for its significant role in regional power generation and flood control.
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: Howland Dam
Target entity description: Howland Dam is a hydroelectric dam on Maine’s Piscataquis River that became a focal point of river restoration efforts to improve fish passage and ecosystem health.

A. LaBarge Dam
LaBarge Dam is a small hydroengineering structure located on the Thornapple River in Michigan, used primarily for water level control and local recreation.
B. Gathright Dam
Gathright Dam is a large earthen dam in western Virginia that creates Lake Moomaw and provides flood control and recreation in the Jackson River basin.
C. Waddell Dam
Waddell Dam is a major dam in Arizona that impounds the Agua Fria River to form Lake Pleasant, a key water storage and recreation reservoir for the Phoenix metropolitan area.
D. O’Neill Dam
O’Neill Dam is an earthfill embankment dam in California that forms the O’Neill Forebay as part of the state’s Central Valley Project water storage and conveyance system.
E. Fengman Dam
Fengman Dam is a large hydroelectric gravity dam on the Songhua River in Jilin Province, China, known for its significant role in regional power generation and flood control.
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_69d8b915e3e881909125d760c15d0c29`	completed	April 10, 2026, 8:47 a.m.
NER	Named-entity recognition	`batch_69e5018176d481909536f50689f878d2`	completed	April 19, 2026, 4:23 p.m.

Created at: April 10, 2026, 10:35 a.m.