Mark Janus
E755432
Mark Janus is an Illinois state employee who became the central figure in a landmark U.S. Supreme Court case challenging mandatory public-sector union fees on First Amendment grounds.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mark Janus canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8753203 — 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: Mark Janus Context triple: [Janus v. AFSCME, petitioner, Mark Janus]
-
A.
Jack Snyder
Jack Snyder is a central fictional police detective character from the long-running American soap opera "As the World Turns."
-
B.
James Pankow
James Pankow is an American trombonist, composer, and founding member of the rock band Chicago, known for his influential horn arrangements and songwriting.
-
C.
Dan Hughes
Dan Hughes is an American basketball coach best known for leading the WNBA’s Seattle Storm to a championship and for his long, successful career coaching multiple WNBA franchises.
-
D.
Jonathan Corwin
Jonathan Corwin was a 17th-century Massachusetts magistrate best known as one of the judges who presided over the Salem witch trials.
-
E.
Lock Martin
Lock Martin was an American actor and former doorman best known for playing the towering robot Gort in the classic science fiction film "The Day the Earth Stood Still" (1951).
- 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: Mark Janus Target entity description: Mark Janus is an Illinois state employee who became the central figure in a landmark U.S. Supreme Court case challenging mandatory public-sector union fees on First Amendment grounds.
-
A.
Jack Snyder
Jack Snyder is a central fictional police detective character from the long-running American soap opera "As the World Turns."
-
B.
James Pankow
James Pankow is an American trombonist, composer, and founding member of the rock band Chicago, known for his influential horn arrangements and songwriting.
-
C.
Dan Hughes
Dan Hughes is an American basketball coach best known for leading the WNBA’s Seattle Storm to a championship and for his long, successful career coaching multiple WNBA franchises.
-
D.
Jonathan Corwin
Jonathan Corwin was a 17th-century Massachusetts magistrate best known as one of the judges who presided over the Salem witch trials.
-
E.
Lock Martin
Lock Martin was an American actor and former doorman best known for playing the towering robot Gort in the classic science fiction film "The Day the Earth Stood Still" (1951).
- F. None of above. chosen
Statements (33)
| Predicate | Object |
|---|---|
| instanceOf |
Illinois state employee
ⓘ
person ⓘ plaintiff ⓘ |
| caseOutcome | U.S. Supreme Court ruled in his favor ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| describedAs | central figure in a landmark U.S. Supreme Court case on public‑sector union fees ⓘ |
| employer | Illinois Department of Healthcare and Family Services ⓘ |
| fieldOfLegalImpact |
constitutional law
ⓘ
labor law ⓘ public‑sector labor relations ⓘ |
| legalAction | challenged mandatory public‑sector union agency fees ⓘ |
| legalArgumentBasedOn | First Amendment to the United States Constitution ⓘ |
| legalIssue |
compelled subsidization of union speech
ⓘ
constitutionality of agency shop arrangements in the public sector ⓘ |
| legalStandingAs | non‑member of AFSCME ⓘ |
| mediaCoverage | extensive national media attention in the United States ⓘ |
| notableCourtDecisionDate | 2018-06-27 ⓘ |
| notableFor | being the named plaintiff in Janus v. AFSCME ⓘ |
| occupation | child support specialist ⓘ |
| opposedOrganization |
American Federation of State, County, and Municipal Employees, Council 31
ⓘ
linked to:
AFSCME Council 31
|
| opposedPractice | collection of agency fees from non‑union public employees ⓘ |
| partyTo |
Janus v. AFSCME
ⓘ
Janus v. American Federation of State, County, and Municipal Employees, Council 31 ⓘ
linked to:
Janus v. AFSCME
|
| positionOnUnionFees | opposed mandatory agency fees for non‑member public employees ⓘ |
| predecessorCase | Abood v. Detroit Board of Education ⓘ |
| religionOrPoliticalView | supports right‑to‑work principles ⓘ |
| representedBy |
Liberty Justice Center
ⓘ
National Right to Work Legal Defense Foundation ⓘ |
| resultedIn |
public‑sector unions barred from collecting mandatory agency fees from non‑consenting employees
ⓘ
strengthening of First Amendment protections for public employees regarding compelled speech ⓘ |
| soughtOutcome | overturn Abood v. Detroit Board of Education ⓘ |
| stateOfResidence | Illinois ⓘ |
| workLocation | Springfield, Illinois ⓘ |
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: Mark Janus Description of subject: Mark Janus is an Illinois state employee who became the central figure in a landmark U.S. Supreme Court case challenging mandatory public-sector union fees on First Amendment grounds.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.