(subclass PreservingFood Keeping) | Food.kif 184-184 | Preserving food is a subclass of keeping |
(subclass CuringFood PreservingFood) | Food.kif 78-78 | Curing food is a subclass of preserving food |
(subclass Fermentation PreservingFood) | Food.kif 203-203 | Fermentation is a subclass of preserving food |