Massachusetts Correctional Institution – Cedar Junction
E870030
Massachusetts Correctional Institution – Cedar Junction is a maximum-security state prison in Walpole, Massachusetts, known for housing some of the most serious offenders in the state’s correctional system.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Massachusetts Correctional Institution – Cedar Junction canonical | 1 |
| Massachusetts Correctional Institution – Walpole | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10546706 — 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: Massachusetts Correctional Institution – Cedar Junction Context triple: [Walpole, Massachusetts, hasCorrectionalFacility, Massachusetts Correctional Institution – Cedar Junction]
-
A.
Massachusetts Correctional Institution – Bridgewater
Massachusetts Correctional Institution – Bridgewater is a medium-security state prison and treatment facility for male offenders located in Bridgewater, near Brockton, Massachusetts.
-
B.
Massachusetts Correctional Institution – Shirley
Massachusetts Correctional Institution – Shirley is a medium- and minimum-security state prison complex for men located in Shirley, Massachusetts.
-
C.
Massachusetts Correctional Institution – Plymouth
Massachusetts Correctional Institution – Plymouth is a minimum-security state prison and pre-release facility for men located in Plymouth, Massachusetts.
-
D.
Downeast Correctional Facility
Downeast Correctional Facility is a state-run prison in Maine that housed minimum-security inmates and provided work and rehabilitation programs before its closure.
-
E.
Richard J. Donovan Correctional Facility
Richard J. Donovan Correctional Facility is a California state prison located near San Diego that houses medium- to maximum-security inmates, including several high-profile prisoners.
- 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: Massachusetts Correctional Institution – Cedar Junction Target entity description: Massachusetts Correctional Institution – Cedar Junction is a maximum-security state prison in Walpole, Massachusetts, known for housing some of the most serious offenders in the state’s correctional system.
-
A.
Massachusetts Correctional Institution – Bridgewater
Massachusetts Correctional Institution – Bridgewater is a medium-security state prison and treatment facility for male offenders located in Bridgewater, near Brockton, Massachusetts.
-
B.
Massachusetts Correctional Institution – Shirley
Massachusetts Correctional Institution – Shirley is a medium- and minimum-security state prison complex for men located in Shirley, Massachusetts.
-
C.
Massachusetts Correctional Institution – Plymouth
Massachusetts Correctional Institution – Plymouth is a minimum-security state prison and pre-release facility for men located in Plymouth, Massachusetts.
-
D.
Downeast Correctional Facility
Downeast Correctional Facility is a state-run prison in Maine that housed minimum-security inmates and provided work and rehabilitation programs before its closure.
-
E.
Richard J. Donovan Correctional Facility
Richard J. Donovan Correctional Facility is a California state prison located near San Diego that houses medium- to maximum-security inmates, including several high-profile prisoners.
- F. None of above. chosen
Statements (37)
| Predicate | Object |
|---|---|
| instanceOf |
correctional facility
ⓘ
maximum-security prison ⓘ state prison ⓘ |
| category |
maximum-security facility
ⓘ
penal institution ⓘ |
| city | Walpole ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| formerlyKnownAs | Massachusetts Correctional Institution – Walpole ⓘ |
| function | houses adult male offenders ⓘ |
| governingBody | Massachusetts Department of Correction ⓘ |
| hasAddressCountry |
United States
ⓘ
linked to:
United States of America
|
| hasAddressLocality | Walpole ⓘ |
| hasAddressRegion | Massachusetts ⓘ |
| hasLanguageOfAdministration | English ⓘ |
| hasLevelOfGovernment | state ⓘ |
| hasType | adult male prison ⓘ |
| inception | 20th century ⓘ |
| isPublicInstitution | true ⓘ |
| jurisdiction |
Commonwealth of Massachusetts
ⓘ
linked to:
Massachusetts
|
| knownFor |
high-security custody of inmates
ⓘ
housing some of the most serious offenders in Massachusetts ⓘ |
| legalStatus | active correctional facility ⓘ |
| locatedIn | Norfolk County, Massachusetts ⓘ |
| locatedInTimeZone | Eastern Time Zone ⓘ |
| locatedNear | Walpole, Massachusetts ⓘ |
| operatedBy | Massachusetts Department of Correction ⓘ |
| partOf |
Massachusetts state prison system
ⓘ
linked to:
Massachusetts Department of Correction
|
| region | New England ⓘ |
| securityClassification | maximum security ⓘ |
| shortName |
MCI Walpole
ⓘ
MCI – Cedar Junction ⓘ MCI-Cedar Junction ⓘ
linked to:
MCI – Cedar Junction
|
| state | Massachusetts ⓘ |
| subjectOf |
discussions of maximum-security incarceration in Massachusetts
ⓘ
news reports about prison conditions in Massachusetts ⓘ |
| usedFor |
custody of high-risk inmates
ⓘ
long-term incarceration ⓘ |
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: Massachusetts Correctional Institution – Cedar Junction Description of subject: Massachusetts Correctional Institution – Cedar Junction is a maximum-security state prison in Walpole, Massachusetts, known for housing some of the most serious offenders in the state’s correctional system.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
Walpole, Massachusetts
→
hasCorrectionalFacility
→
Massachusetts Correctional Institution – Cedar Junction
ⓘ
Massachusetts Correctional Institution – Cedar Junction
→
formerlyKnownAs
→
Massachusetts Correctional Institution – Walpole
ⓘ
linked to: Massachusetts Correctional Institution – Cedar Junction