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| physical object > person > dead person > 19th century scientist > Curtis | 
| Curtis comparison table | ||||||||
| Subject | has name | has domain | has degree | is a kind of | is an instance of | has definition | has career | has birth date | 
|---|---|---|---|---|---|---|---|---|
| 19th century scientist | dead person | a scientist born between 1800 and 1900 AD | ||||||
| astronomer | astronomy | scientist | a scientist specializing in astronomy | |||||
| Curtis | Heber Doust Curtis | astronomy | 
  | 19th century scientist | 
  | 1872 | 
Next 19th century scientist: Hale     Up: 19th century scientist, astronomer    Previous 19th century scientist: Cecilia Payne Gaposhkin