Sadie Tanner Mossell Alexander
E180976
Sadie Tanner Mossell Alexander was a pioneering African American lawyer, economist, and civil rights advocate who became the first Black woman to earn a Ph.D. in economics in the United States and one of the first Black women admitted to the bar in Pennsylvania.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Sadie Tanner Mossell Alexander canonical | 3 |
| Sadie Tanner Mossell | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1512996 — 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: Sadie Tanner Mossell Alexander Context triple: [University of Pennsylvania Law School, hasNotableAlumni, Sadie Tanner Mossell Alexander]
-
A.
Mary McBride Smith
Mary McBride Smith was the wife of renowned American film director John Ford.
-
B.
Margaret Ann Dixon
Margaret Ann Dixon is best known as the wife of acclaimed Canadian film director and producer Norman Jewison.
-
C.
Sadie Avery Pope
Sadie Avery Pope was the wife of prominent American architect John Russell Pope, known for her role within a notable early 20th-century architectural family.
-
D.
Isabel Mary Wells
Isabel Mary Wells was the first wife of English writer H. G. Wells, whom he married in 1891 before their eventual separation.
-
E.
Mildred Harris
Mildred Harris was an American silent film actress best known for her early Hollywood career and her brief marriage to Charlie Chaplin.
- 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: Sadie Tanner Mossell Alexander Target entity description: Sadie Tanner Mossell Alexander was a pioneering African American lawyer, economist, and civil rights advocate who became the first Black woman to earn a Ph.D. in economics in the United States and one of the first Black women admitted to the bar in Pennsylvania.
-
A.
Mary McBride Smith
Mary McBride Smith was the wife of renowned American film director John Ford.
-
B.
Margaret Ann Dixon
Margaret Ann Dixon is best known as the wife of acclaimed Canadian film director and producer Norman Jewison.
-
C.
Sadie Avery Pope
Sadie Avery Pope was the wife of prominent American architect John Russell Pope, known for her role within a notable early 20th-century architectural family.
-
D.
Isabel Mary Wells
Isabel Mary Wells was the first wife of English writer H. G. Wells, whom he married in 1891 before their eventual separation.
-
E.
Mildred Harris
Mildred Harris was an American silent film actress best known for her early Hollywood career and her brief marriage to Charlie Chaplin.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
civil rights activist
ⓘ
economist ⓘ human ⓘ lawyer ⓘ |
| academicDegree |
Juris Doctor
ⓘ
Ph.D. in economics ⓘ |
| appointedBy |
President Harry S. Truman
ⓘ
surface form:
Harry S. Truman
|
| barAdmission | Pennsylvania Bar ⓘ |
| birthName |
Sadie Tanner Mossell Alexander
self-linksurface differs
ⓘ
surface form:
Sadie Tanner Mossell
|
| countryOfCitizenship | United States of America ⓘ |
| dateOfBirth | 1898-01-02 ⓘ |
| dateOfDeath | 1989-11-01 ⓘ |
| educatedAt |
University of Pennsylvania
ⓘ
University of Pennsylvania Law School ⓘ |
| ethnicGroup |
Black Americans
ⓘ
surface form:
African American
|
| familyName |
Alexander
ⓘ
Mossell ⓘ |
| fieldOfWork |
civil rights
ⓘ
economics ⓘ law ⓘ |
| fullName | Sadie Tanner Mossell Alexander self-link ⓘ |
| givenName | Sadie ⓘ |
| hasHeritage | African-American middle-class professional family in Philadelphia ⓘ |
| honorificPrefix | Dr. ⓘ |
| knownFor |
advocacy for racial and gender equality
ⓘ
pioneering role for African American women in law and economics ⓘ |
| languageSpoken | English ⓘ |
| memberOf | Delta Sigma Theta Sorority, Inc. ⓘ |
| movement |
American civil rights movement
ⓘ
surface form:
Civil rights movement in the United States
|
| notableAchievement |
first African American woman to receive a Ph.D. from the University of Pennsylvania
ⓘ
first African American woman to receive a Ph.D. in economics in the United States ⓘ one of the first African American women admitted to the Pennsylvania bar ⓘ |
| notableWork | contributions to the President’s Committee on Civil Rights report "To Secure These Rights" ⓘ |
| occupation |
attorney
ⓘ
civil rights advocate ⓘ economist ⓘ |
| placeOfBirth |
Philadelphia
ⓘ
surface form:
Philadelphia, Pennsylvania, United States
|
| placeOfDeath |
Philadelphia
ⓘ
surface form:
Philadelphia, Pennsylvania, United States
|
| positionHeld |
Assistant City Solicitor of Philadelphia
ⓘ
National President of Delta Sigma Theta Sorority, Inc. ⓘ member of the President’s Committee on Civil Rights ⓘ |
| relative |
Bishop Benjamin Tucker Tanner
ⓘ
Henry Ossawa Tanner ⓘ Lewis Baxter Moore ⓘ |
| religion | Methodism ⓘ |
| sexOrGender | female ⓘ |
| spouse | Raymond Pace Alexander ⓘ |
| workedIn |
Philadelphia
ⓘ
surface form:
Philadelphia, Pennsylvania
|
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: Sadie Tanner Mossell Alexander Description of subject: Sadie Tanner Mossell Alexander was a pioneering African American lawyer, economist, and civil rights advocate who became the first Black woman to earn a Ph.D. in economics in the United States and one of the first Black women admitted to the bar in Pennsylvania.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
Sadie Tanner Mossell Alexander
→
birthName
→
Sadie Tanner Mossell Alexander
self-linksurface differs
ⓘ
this entity surface form:
Sadie Tanner Mossell