Deductions
- Category:Washington, D.C.-related lists has quality class ⇐ (existence is a class), (Category:Washington, D.C.-related lists has quality existence)
- class is for example Category:Washington, D.C.-related lists ⇐ (Category:Washington, D.C.-related lists is a class), (is a is inverse of is for example)
- Category:Washington, D.C.-related lists is a class ⇐ (abstract entity is subclass of class), (Category:Washington, D.C.-related lists is a abstract entity)
- abstract entity is for example Category:Washington, D.C.-related lists ⇐ (Category:Washington, D.C.-related lists is a abstract entity), (is a is inverse of is for example)
- Category:Washington, D.C.-related lists is a abstract entity ⇐ (Wikimedia category is subclass of abstract entity), (Category:Washington, D.C.-related lists is a Wikimedia category)
- Wikimedia category is for example Category:Washington, D.C.-related lists ⇐ (Category:Washington, D.C.-related lists is a Wikimedia category), (is a is inverse of is for example)
- entity is for example Category:Washington, D.C.-related lists ⇐ (Category:Washington, D.C.-related lists is a entity), (is a is inverse of is for example)
- Category:Washington, D.C.-related lists has quality existence ⇐ (Category:Washington, D.C.-related lists is a entity), (entity has quality existence)
- Category:Washington, D.C.-related lists is a entity ⇐ (Wikimedia category is subclass of entity), (Category:Washington, D.C.-related lists is a Wikimedia category)
- Category:Washington, D.C.-related lists is a Wikimedia category ⇐ (Wikimedia lists category is subclass of Wikimedia category), (Category:Washington, D.C.-related lists is a Wikimedia lists category)
- Wikimedia lists category is for example Category:Washington, D.C.-related lists ⇐ (Category:Washington, D.C.-related lists is a Wikimedia lists category), (is a is inverse of is for example)