Alexander Todd
E485619
Alexander Todd was a member of the prominent Todd family of Kentucky, known primarily as a brother of Emilie Todd Helm and thus part of the extended family circle of Mary Todd Lincoln.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Alexander Todd canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4981976 — 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: Alexander Todd Context triple: [Emilie Todd Helm, sibling, Alexander Todd]
-
A.
Severo Ochoa
Severo Ochoa was a Spanish-American biochemist and molecular biologist who won the 1959 Nobel Prize in Physiology or Medicine for his work on the synthesis of RNA.
-
B.
Luis Federico Leloir
Luis Federico Leloir was an Argentine physician and biochemist who won the 1970 Nobel Prize in Chemistry for his discovery of sugar nucleotides and their role in carbohydrate metabolism.
-
C.
Albert Eschenmoser
Albert Eschenmoser is a Swiss organic chemist renowned for his pioneering work on the structure and synthesis of vitamin B12 and for fundamental contributions to the understanding of organic reaction mechanisms and prebiotic chemistry.
-
D.
Hugo Ehrlich
Hugo Ehrlich was a Croatian architect known for his significant contributions to early 20th-century architecture in Zagreb.
-
E.
John Warcup Cornforth
John Warcup Cornforth was an Australian–British chemist and Nobel laureate renowned for his work on the stereochemistry of enzyme-catalyzed reactions.
- 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: Alexander Todd Target entity description: Alexander Todd was a member of the prominent Todd family of Kentucky, known primarily as a brother of Emilie Todd Helm and thus part of the extended family circle of Mary Todd Lincoln.
-
A.
Severo Ochoa
Severo Ochoa was a Spanish-American biochemist and molecular biologist who won the 1959 Nobel Prize in Physiology or Medicine for his work on the synthesis of RNA.
-
B.
Luis Federico Leloir
Luis Federico Leloir was an Argentine physician and biochemist who won the 1970 Nobel Prize in Chemistry for his discovery of sugar nucleotides and their role in carbohydrate metabolism.
-
C.
Albert Eschenmoser
Albert Eschenmoser is a Swiss organic chemist renowned for his pioneering work on the structure and synthesis of vitamin B12 and for fundamental contributions to the understanding of organic reaction mechanisms and prebiotic chemistry.
-
D.
Hugo Ehrlich
Hugo Ehrlich was a Croatian architect known for his significant contributions to early 20th-century architecture in Zagreb.
-
E.
John Warcup Cornforth
John Warcup Cornforth was an Australian–British chemist and Nobel laureate renowned for his work on the stereochemistry of enzyme-catalyzed reactions.
- F. None of above. chosen
Statements (9)
| Predicate | Object |
|---|---|
| instanceOf | person ⓘ |
| countryOfCitizenship |
United States
ⓘ
linked to:
United States of America
|
| familyName | Todd ⓘ |
| memberOf |
Todd family of Kentucky
ⓘ
linked to:
prominent Todd family of Kentucky
|
| partOf | extended family of Mary Todd Lincoln ⓘ |
| placeOfOrigin | Kentucky ⓘ |
| relative | Mary Todd Lincoln ⓘ |
| sibling |
Emilie Todd Helm
ⓘ
Mary Todd Lincoln ⓘ |
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: Alexander Todd Description of subject: Alexander Todd was a member of the prominent Todd family of Kentucky, known primarily as a brother of Emilie Todd Helm and thus part of the extended family circle of Mary Todd Lincoln.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.