Maggie Pierce
E201874
Maggie Pierce is a cardiothoracic surgeon and the biological half-sister of Meredith Grey on the long-running medical drama series Grey’s Anatomy.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Maggie Pierce canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T1545471 — 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: Maggie Pierce Context triple: [Grey’s Anatomy, character, Maggie Pierce]
-
A.
Maggie Hartford
Maggie Hartford is a fictional character from the American prime-time soap opera "Falcon Crest," known for her involvement in the show's intricate family and vineyard dramas.
-
B.
Maggie Weston
Maggie Weston is a British makeup artist and costume designer best known for her long-term collaboration with filmmaker Terry Gilliam on several of his visually distinctive films.
-
C.
Maggie
Maggie is a common diminutive form of the given name Margaret, often used as a familiar or affectionate nickname.
-
D.
Mary Lee Hartford
Mary Lee Hartford was the second wife of American actor and producer Douglas Fairbanks Jr., known primarily for her marriage into the prominent Fairbanks family.
-
E.
Cora Crane
Cora Crane was an American writer, journalist, and proprietor of a Jacksonville, Florida brothel, best known for her long-term relationship with author Stephen Crane and her vivid reportage from the Spanish-American War.
- 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: Maggie Pierce Target entity description: Maggie Pierce is a cardiothoracic surgeon and the biological half-sister of Meredith Grey on the long-running medical drama series Grey’s Anatomy.
-
A.
Maggie Hartford
Maggie Hartford is a fictional character from the American prime-time soap opera "Falcon Crest," known for her involvement in the show's intricate family and vineyard dramas.
-
B.
Maggie Weston
Maggie Weston is a British makeup artist and costume designer best known for her long-term collaboration with filmmaker Terry Gilliam on several of his visually distinctive films.
-
C.
Maggie
Maggie is a common diminutive form of the given name Margaret, often used as a familiar or affectionate nickname.
-
D.
Mary Lee Hartford
Mary Lee Hartford was the second wife of American actor and producer Douglas Fairbanks Jr., known primarily for her marriage into the prominent Fairbanks family.
-
E.
Cora Crane
Cora Crane was an American writer, journalist, and proprietor of a Jacksonville, Florida brothel, best known for her long-term relationship with author Stephen Crane and her vivid reportage from the Spanish-American War.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
fictional character
ⓘ
surgeon ⓘ television character ⓘ |
| ageCharacteristic | child prodigy in medicine ⓘ |
| appearsIn |
Grey’s Anatomy
ⓘ
surface form:
Grey's Anatomy
|
| basedIn |
Seattle, Washington, United States
ⓘ
surface form:
Seattle, Washington (fictional setting)
|
| biologicalFather | Richard Webber ⓘ |
| biologicalMother | Ellis Grey ⓘ |
| characterType | main character ⓘ |
| countryOfOrigin | United States (series context) ⓘ |
| creator | Shonda Rhimes ⓘ |
| education | graduated medical school at a young age ⓘ |
| familyName | Pierce ⓘ |
| fictionalUniverse |
Grey’s Anatomy
ⓘ
surface form:
Grey's Anatomy universe
|
| firstAppearance |
Grey’s Anatomy
ⓘ
surface form:
Grey's Anatomy Season 10
|
| firstAppearanceEpisode | "Everything I Try to Do, Nothing Seems to Turn Out Right" ⓘ |
| fullName | Margaret Pierce ⓘ |
| gender | female ⓘ |
| genre | medical drama ⓘ |
| givenName | Maggie ⓘ |
| introducedAs | new head of cardiothoracic surgery at Grey Sloan Memorial Hospital ⓘ |
| language | English ⓘ |
| medium | television ⓘ |
| nationality | American (fictional) ⓘ |
| network | American Broadcasting Company ⓘ |
| notableFor |
being Meredith Grey's half-sister
ⓘ
being chief of cardiothoracic surgery at Grey Sloan Memorial Hospital ⓘ |
| occupation |
cardiothoracic surgeon
ⓘ
chief of cardiothoracic surgery ⓘ doctor ⓘ |
| personalityTrait |
highly intelligent
ⓘ
socially awkward ⓘ |
| portrayedBy | Kelly McCreary ⓘ |
| relationship |
close friendship with Meredith Grey
ⓘ
mentor-mentee relationship with Richard Webber ⓘ romantic relationship with Jackson Avery ⓘ |
| seriesTitle |
Grey’s Anatomy
ⓘ
surface form:
Grey's Anatomy
|
| sibling |
Lexie Grey
ⓘ
Meredith Grey ⓘ |
| siblingType | half-sister of Meredith Grey ⓘ |
| specialty |
cardiac surgery
ⓘ
cardiothoracic surgery ⓘ |
| stepSibling | Amelia Shepherd ⓘ |
| storyArc |
adjusting to being part of the Grey family
ⓘ
discovering her biological parents ⓘ |
| worksAt |
Grey Sloan Memorial Hospital
ⓘ
Seattle hospital ⓘ |
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: Maggie Pierce Description of subject: Maggie Pierce is a cardiothoracic surgeon and the biological half-sister of Meredith Grey on the long-running medical drama series Grey’s Anatomy.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.