(subclass Chicken Poultry) | Mid-level-ontology.kif 20225-20225 | Chicken is a subclass of poultry |
(subclass Hen Chicken) | Mid-level-ontology.kif 20229-20229 | Hen is a subclass of chicken |
(subclass Rooster Chicken) | Mid-level-ontology.kif 20238-20238 | Rooster is a subclass of chicken |