American Information Technologies Corporation
E701070
American Information Technologies Corporation, commonly known as Ameritech, was a regional Bell operating company that provided telecommunications services in the Midwestern United States before being acquired by SBC Communications (now AT&T).
All labels observed (1)
| Label | Occurrences |
|---|---|
| American Information Technologies Corporation canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7866840 — 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: American Information Technologies Corporation Context triple: [Ameritech, alsoKnownAs, American Information Technologies Corporation]
-
A.
Computer Sciences Corporation
Computer Sciences Corporation was a major American multinational IT services and consulting company that provided technology and professional services to government and commercial clients worldwide.
-
B.
Unisys
Unisys is an American global information technology company known for providing IT services, software, and infrastructure solutions to government and commercial clients.
-
C.
Engineering Information Inc.
Engineering Information Inc. is a company known for producing and distributing specialized engineering and technical information resources and databases.
-
D.
Control Data Corporation
Control Data Corporation was a pioneering American computer company best known for its powerful mainframe and supercomputer systems during the 1960s and 1970s.
-
E.
International Data Group
International Data Group is a global technology media, data, and marketing services company known for publishing tech-focused content and organizing industry events worldwide.
- 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: American Information Technologies Corporation Target entity description: American Information Technologies Corporation, commonly known as Ameritech, was a regional Bell operating company that provided telecommunications services in the Midwestern United States before being acquired by SBC Communications (now AT&T).
-
A.
Computer Sciences Corporation
Computer Sciences Corporation was a major American multinational IT services and consulting company that provided technology and professional services to government and commercial clients worldwide.
-
B.
Unisys
Unisys is an American global information technology company known for providing IT services, software, and infrastructure solutions to government and commercial clients.
-
C.
Engineering Information Inc.
Engineering Information Inc. is a company known for producing and distributing specialized engineering and technical information resources and databases.
-
D.
Control Data Corporation
Control Data Corporation was a pioneering American computer company best known for its powerful mainframe and supercomputer systems during the 1960s and 1970s.
-
E.
International Data Group
International Data Group is a global technology media, data, and marketing services company known for publishing tech-focused content and organizing industry events worldwide.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
defunct company
ⓘ
regional Bell operating company ⓘ |
| acquiredBy | SBC Communications NERFINISHED ⓘ |
| acquisitionCompleted | 1999 ⓘ |
| alsoKnownAs | Ameritech NERFINISHED ⓘ |
| brand | Ameritech NERFINISHED ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| dissolved | 1999 ⓘ |
| formedFrom |
Illinois Bell
NERFINISHED
ⓘ
Indiana Bell NERFINISHED ⓘ Michigan Bell NERFINISHED ⓘ Ohio Bell NERFINISHED ⓘ Wisconsin Bell NERFINISHED ⓘ |
| founded | 1983 ⓘ |
| headquartersLocation |
Chicago, Illinois, United States
ⓘ
surface form:
Chicago, Illinois
|
| industry | telecommunications ⓘ |
| laterKnownAs | part of AT&T ⓘ |
| mergedInto | SBC Communications NERFINISHED ⓘ |
| origin | Bell System divestiture NERFINISHED ⓘ |
| owned |
Ameritech Mobile Communications
NERFINISHED
ⓘ
Illinois Bell NERFINISHED ⓘ Indiana Bell NERFINISHED ⓘ Michigan Bell NERFINISHED ⓘ Ohio Bell NERFINISHED ⓘ Wisconsin Bell NERFINISHED ⓘ |
| parentCompany | SBC Communications NERFINISHED ⓘ |
| partOf |
Baby Bells
NERFINISHED
ⓘ
Regional Bell Operating Companies NERFINISHED ⓘ |
| providedService |
cellular telephone service
ⓘ
data communications services ⓘ directory publishing ⓘ local telephone service ⓘ long-distance telephone service ⓘ |
| region | Midwest NERFINISHED ⓘ |
| regulator | Federal Communications Commission NERFINISHED ⓘ |
| serviceArea |
Illinois
NERFINISHED
ⓘ
Indiana NERFINISHED ⓘ Michigan NERFINISHED ⓘ Midwestern United States NERFINISHED ⓘ Ohio NERFINISHED ⓘ Wisconsin NERFINISHED ⓘ |
| stockExchangeListing | New York Stock Exchange ⓘ |
| successor | AT&T Inc. NERFINISHED ⓘ |
| telephoneArea | Great Lakes region NERFINISHED ⓘ |
| tickerSymbol | AIT NERFINISHED ⓘ |
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: American Information Technologies Corporation Description of subject: American Information Technologies Corporation, commonly known as Ameritech, was a regional Bell operating company that provided telecommunications services in the Midwestern United States before being acquired by SBC Communications (now AT&T).
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.