Raker Act
E530231
The Raker Act is a 1913 U.S. federal law that authorized San Francisco to develop the Hetch Hetchy Valley in Yosemite National Park for a public water and power supply, leading to the construction of O'Shaughnessy Dam.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Raker Act canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T5554522 — 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: Raker Act Context triple: [O'Shaughnessy Dam, authorizedBy, Raker Act]
-
A.
Shepard–Byrd Act
The Shepard–Byrd Act is a U.S. federal hate-crime law that expanded protections to include crimes motivated by a victim’s actual or perceived gender, sexual orientation, gender identity, or disability.
-
B.
Aldrich–Vreeland Act
The Aldrich–Vreeland Act was a 1908 U.S. law that created emergency currency provisions and laid groundwork for banking reform in response to the Panic of 1907.
-
C.
Dingley Act
The Dingley Act was an 1897 U.S. tariff law that sharply raised import duties to protect domestic industries, succeeding and strengthening the earlier McKinley Tariff.
-
D.
Wheeler–Howard Act
The Wheeler–Howard Act, formally known as the Indian Reorganization Act of 1934, is a U.S. federal law that ended the allotment of tribal lands and aimed to restore tribal self-government and communal landholding for Native American tribes.
-
E.
Wheeler-Rayburn Act
The Wheeler-Rayburn Act is a New Deal-era U.S. federal law that restructured and regulated electric utility holding companies to curb monopolistic practices and protect consumers and investors.
- 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: Raker Act Target entity description: The Raker Act is a 1913 U.S. federal law that authorized San Francisco to develop the Hetch Hetchy Valley in Yosemite National Park for a public water and power supply, leading to the construction of O'Shaughnessy Dam.
-
A.
Shepard–Byrd Act
The Shepard–Byrd Act is a U.S. federal hate-crime law that expanded protections to include crimes motivated by a victim’s actual or perceived gender, sexual orientation, gender identity, or disability.
-
B.
Aldrich–Vreeland Act
The Aldrich–Vreeland Act was a 1908 U.S. law that created emergency currency provisions and laid groundwork for banking reform in response to the Panic of 1907.
-
C.
Dingley Act
The Dingley Act was an 1897 U.S. tariff law that sharply raised import duties to protect domestic industries, succeeding and strengthening the earlier McKinley Tariff.
-
D.
Wheeler–Howard Act
The Wheeler–Howard Act, formally known as the Indian Reorganization Act of 1934, is a U.S. federal law that ended the allotment of tribal lands and aimed to restore tribal self-government and communal landholding for Native American tribes.
-
E.
Wheeler-Rayburn Act
The Wheeler-Rayburn Act is a New Deal-era U.S. federal law that restructured and regulated electric utility holding companies to curb monopolistic practices and protect consumers and investors.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf | United States federal law ⓘ |
| appliesTo |
City and County of San Francisco
ⓘ
linked to:
San Francisco County
|
| authorized |
construction of O'Shaughnessy Dam
ⓘ
development of Hetch Hetchy Valley ⓘ municipal water supply for San Francisco ⓘ public power supply for San Francisco ⓘ |
| controversy | conservation versus development in national parks ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| dateOfEnactment | 1913 ⓘ |
| enables | municipal ownership of water and power facilities at Hetch Hetchy ⓘ |
| impact |
expansion of San Francisco's municipal utilities
ⓘ
loss of a scenic valley within a national park ⓘ |
| jurisdiction |
United States federal government
ⓘ
linked to:
United States government
|
| legislativeBody | United States Congress ⓘ |
| location |
Hetch Hetchy Valley
ⓘ
Yosemite National Park ⓘ |
| namedAfter | John E. Raker ⓘ |
| purpose |
to provide San Francisco with a reliable water supply
ⓘ
to provide San Francisco with hydroelectric power ⓘ |
| regulates |
generation of hydroelectric power at Hetch Hetchy
ⓘ
rights of San Francisco to water from the Tuolumne River ⓘ use of Hetch Hetchy Valley for municipal purposes ⓘ |
| relatedTo |
Hetch Hetchy Reservoir
ⓘ
O'Shaughnessy Dam ⓘ Tuolumne River ⓘ Yosemite National Park ⓘ |
| resultedIn |
construction of O'Shaughnessy Dam
ⓘ
flooding of Hetch Hetchy Valley ⓘ
linked to:
Hetch Hetchy Reservoir
|
| sector |
hydroelectric power
ⓘ
water supply ⓘ |
| signedBy | President of the United States ⓘ |
| subjectOf | environmental controversy over development in national parks ⓘ |
| timePeriod | Progressive Era ⓘ |
| typeOfLaw |
public utilities law
ⓘ
resource development law ⓘ |
| year | 1913 ⓘ |
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: Raker Act Description of subject: The Raker Act is a 1913 U.S. federal law that authorized San Francisco to develop the Hetch Hetchy Valley in Yosemite National Park for a public water and power supply, leading to the construction of O'Shaughnessy Dam.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.