Clean Air Act
E4929
The Clean Air Act is a landmark U.S. federal law that regulates air emissions from stationary and mobile sources to protect public health and the environment from air pollution.
All labels observed (32)
How this entity was disambiguated
This entity first appeared as the object of triple T77962 — 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: Clean Air Act Context triple: [United States Environmental Protection Agency, enforces, Clean Air Act]
-
A.
U.S. Endangered Species Act
The U.S. Endangered Species Act is a landmark federal law that provides legal protection and conservation measures for species at risk of extinction and the ecosystems on which they depend.
-
B.
Energy Reorganization Act of 1974
The Energy Reorganization Act of 1974 is a U.S. federal law that restructured the nation’s nuclear energy program, notably splitting regulatory and promotional functions and creating the Nuclear Regulatory Commission.
-
C.
Public Law 80-253
Public Law 80-253 is the formal designation of the landmark National Security Act of 1947, which reorganized the U.S. military and intelligence structure after World War II.
-
D.
Riegle Community Development and Regulatory Improvement Act of 1994
The Riegle Community Development and Regulatory Improvement Act of 1994 is a U.S. federal law aimed at promoting community development and financial services in underserved areas, notably by establishing the Community Development Financial Institutions (CDFI) Fund.
-
E.
Public Law 86-209
Public Law 86-209 is a United States federal statute that established the National Medal of Science as a presidential award recognizing outstanding contributions to scientific knowledge.
- 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: Clean Air Act Target entity description: The Clean Air Act is a landmark U.S. federal law that regulates air emissions from stationary and mobile sources to protect public health and the environment from air pollution.
-
A.
U.S. Endangered Species Act
The U.S. Endangered Species Act is a landmark federal law that provides legal protection and conservation measures for species at risk of extinction and the ecosystems on which they depend.
-
B.
Energy Reorganization Act of 1974
The Energy Reorganization Act of 1974 is a U.S. federal law that restructured the nation’s nuclear energy program, notably splitting regulatory and promotional functions and creating the Nuclear Regulatory Commission.
-
C.
Public Law 80-253
Public Law 80-253 is the formal designation of the landmark National Security Act of 1947, which reorganized the U.S. military and intelligence structure after World War II.
-
D.
Riegle Community Development and Regulatory Improvement Act of 1994
The Riegle Community Development and Regulatory Improvement Act of 1994 is a U.S. federal law aimed at promoting community development and financial services in underserved areas, notably by establishing the Community Development Financial Institutions (CDFI) Fund.
-
E.
Public Law 86-209
Public Law 86-209 is a United States federal statute that established the National Medal of Science as a presidential award recognizing outstanding contributions to scientific knowledge.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
United States federal law
ⓘ
environmental law ⓘ |
| abbreviation |
National Ambient Air Quality Standards
ⓘ
surface form:
NAAQS
NESHAP ⓘ NSPS ⓘ SIPs ⓘ |
| administeredBy | United States Environmental Protection Agency ⓘ |
| aimsTo |
control air pollution
ⓘ
protect public health ⓘ protect the environment ⓘ |
| authorizes |
citizen suits
ⓘ
federal enforcement actions ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| establishes |
Acid Rain Program
ⓘ
National Ambient Air Quality Standards ⓘ NESHAP ⓘ
surface form:
National Emission Standards for Hazardous Air Pollutants
New Source Performance Standards ⓘ Prevention of Significant Deterioration program ⓘ Title V operating permit program ⓘ |
| focusesOn |
air quality monitoring
ⓘ
ambient air quality standards ⓘ emission limitations ⓘ technology-based standards ⓘ |
| includesTitle |
Title I – Air Pollution Prevention and Control
ⓘ
Title II – Emission Standards for Moving Sources ⓘ Title III – General Provisions ⓘ Clean Air Act self-linksurface differs ⓘ
surface form:
Title IV – Acid Deposition Control
Title V – Permits ⓘ Title VI – Stratospheric Ozone Protection ⓘ |
| jurisdiction |
United States government
ⓘ
surface form:
United States federal government
|
| legalCitation | 42 U.S.C. §7401 et seq. ⓘ |
| primaryGoal | to achieve and maintain healthy air quality levels ⓘ |
| providesFor | federal implementation plans when states fail to act ⓘ |
| regulates |
air emissions
ⓘ
mobile sources ⓘ stationary sources ⓘ |
| requires |
best available control technology for major new sources in attainment areas
ⓘ
lowest achievable emission rate for major new sources in nonattainment areas ⓘ state implementation plans ⓘ |
| secondaryGoal | to protect public welfare from adverse effects of air pollution ⓘ |
| shortName | CAA ⓘ |
| targets |
carbon monoxide
ⓘ
criteria air pollutants ⓘ hazardous air pollutants ⓘ lead emissions ⓘ nitrogen oxides emissions ⓘ ozone precursors ⓘ particulate matter ⓘ sulfur dioxide emissions ⓘ |
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: Clean Air Act Description of subject: The Clean Air Act is a landmark U.S. federal law that regulates air emissions from stationary and mobile sources to protect public health and the environment from air pollution.
Referenced by (76)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
U.S. Clean Air Act programs
this entity surface form:
Clean Air Act (offshore provisions)
this entity surface form:
Clean Air Act Amendments of 1990
this entity surface form:
Clean Air Act regulatory programs
United States – Standards for Reformulated and Conventional Gasoline
→
relatedDomesticLaw
→
Clean Air Act
ⓘ
this entity surface form:
U.S. Clean Air Act
this entity surface form:
U.S. Clean Air Act regulations