Proposition 2½ property tax limits
E944771
Proposition 2½ property tax limits are Massachusetts laws that cap how much cities and towns can raise property taxes each year and in total, significantly constraining local revenue growth.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Prop 2½ | 1 |
| Proposition 2 1/2 | 1 |
| Proposition 2½ property tax limits canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11748002 — 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: Proposition 2½ property tax limits Context triple: [Massachusetts municipalities, subjectTo, Proposition 2½ property tax limits]
-
A.
Proposition 1A (2008)
Proposition 1A (2008) was a California ballot measure that authorized billions in bonds to begin funding the state’s high-speed rail system.
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B.
Proposition 20 (2010)
Proposition 20 (2010) was a California ballot measure that expanded the authority of the state's independent citizens redistricting commission to include drawing congressional district boundaries.
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C.
Proposition 11 (2008)
Proposition 11 (2008) was a California ballot measure that transferred the power to draw state legislative district boundaries from the legislature to an independent citizens’ redistricting commission.
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D.
Proposition E (San Francisco, 1999)
Proposition E (San Francisco, 1999) was a city ballot measure that restructured and consolidated San Francisco’s transit and traffic functions into a single, more autonomous transportation agency.
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E.
Measure M transportation sales tax program
The Measure M transportation sales tax program is a voter-approved funding initiative in Orange County, California that finances a wide range of transportation improvements, including road, transit, and infrastructure projects.
- 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: Proposition 2½ property tax limits Target entity description: Proposition 2½ property tax limits are Massachusetts laws that cap how much cities and towns can raise property taxes each year and in total, significantly constraining local revenue growth.
-
A.
Proposition 1A (2008)
Proposition 1A (2008) was a California ballot measure that authorized billions in bonds to begin funding the state’s high-speed rail system.
-
B.
Proposition 20 (2010)
Proposition 20 (2010) was a California ballot measure that expanded the authority of the state's independent citizens redistricting commission to include drawing congressional district boundaries.
-
C.
Proposition 11 (2008)
Proposition 11 (2008) was a California ballot measure that transferred the power to draw state legislative district boundaries from the legislature to an independent citizens’ redistricting commission.
-
D.
Proposition E (San Francisco, 1999)
Proposition E (San Francisco, 1999) was a city ballot measure that restructured and consolidated San Francisco’s transit and traffic functions into a single, more autonomous transportation agency.
-
E.
Measure M transportation sales tax program
The Measure M transportation sales tax program is a voter-approved funding initiative in Orange County, California that finances a wide range of transportation improvements, including road, transit, and infrastructure projects.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Massachusetts state law
ⓘ
property tax cap ⓘ tax limitation policy ⓘ |
| adoptedBy | Massachusetts voters ⓘ |
| adoptionMethod | statewide ballot initiative ⓘ |
| affects |
local government services funding
ⓘ
municipal bond ratings ⓘ public school funding ⓘ |
| allowsExceptionVia |
capital outlay expenditure exclusion
ⓘ
debt exclusion ⓘ override ⓘ |
| alsoKnownAs |
Prop 2½
ⓘ
linked to:
Proposition 2½ property tax limits
Proposition 2 1/2 ⓘ
linked to:
Proposition 2½ property tax limits
|
| appliesInJurisdiction |
Commonwealth of Massachusetts
ⓘ
linked to:
Massachusetts
|
| appliesTo |
Massachusetts cities
ⓘ
Massachusetts towns ⓘ |
| codifiedIn |
Massachusetts General Laws Chapter 59 Section 21C
ⓘ
linked to:
Massachusetts General Laws
|
| constrains |
local revenue growth
ⓘ
municipal budget growth ⓘ |
| createsIncentiveFor |
economic development to increase new growth
ⓘ
greater reliance on state aid ⓘ use of overrides to fund services ⓘ |
| enforcedBy |
Massachusetts Department of Revenue Division of Local Services
ⓘ
linked to:
Massachusetts Department of Revenue
|
| hasComponent |
annual levy increase limit
ⓘ
levy ceiling ⓘ |
| hasPolicyGoal |
constrain size of local government
ⓘ
limit growth of property taxes ⓘ provide tax relief to property owners ⓘ |
| impacts |
commercial property taxpayers
ⓘ
residential property taxpayers ⓘ |
| implementedBy | Massachusetts Department of Revenue ⓘ |
| influences |
local tax policy decisions
ⓘ
municipal budget override campaigns ⓘ municipal service levels ⓘ |
| isSubjectOf |
Massachusetts municipal finance debates
ⓘ
education funding policy discussions ⓘ |
| limitsAnnualLevyIncreaseTo |
2.5 percent of prior year levy
ⓘ
new growth from property development ⓘ |
| regulates |
annual property tax levy increases
ⓘ
maximum property tax levy limit ⓘ municipal property tax levy ⓘ |
| requiresForOverride |
local referendum approval
ⓘ
majority vote of local electorate ⓘ |
| setsLevyCeilingAt | 2.5 percent of full and fair cash value of taxable property ⓘ |
| timePerspective | long-term structural constraint on local revenues ⓘ |
| typeOfCap |
absolute levy ceiling
ⓘ
rate-of-growth cap ⓘ |
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: Proposition 2½ property tax limits Description of subject: Proposition 2½ property tax limits are Massachusetts laws that cap how much cities and towns can raise property taxes each year and in total, significantly constraining local revenue growth.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Proposition 2½ property tax limits
linked to: Proposition 2½ property tax limits