Category1
type: NamedIndividual
type: Category
category name: Biomass
category t ype: 1
categroy id: 4

Consumer1
type: NamedIndividual
type: Consumer
buy: Product1
has id: 3
name: Juan

Product1
type: NamedIndividual
type: Product
has category: Category1
has id: 23467
has name: Briquettes
has quantity: Quantity1

Quantity1
type: NamedIndividual
type: Stock
stock id: 12
stock quantity: 156 kg