# Training:PhD Course on Computational Ontologies @ University of Bologna 2011/Toys and dolls

 Tutorial Training:PhD Course on Computational Ontologies @ University of Bologna 2011 Toys and dolls
Problem:

Design an ontology based on the following sentences:

• Dolls are a kind of toy
• Young women are young persons and female
• A young person cannot be both a young man and a young woman
• Young persons are either young men or young women
• Most famous dolls are Lenore and Emily
• Young women play with some doll
• Young women play with only most famous dolls
• Young men play with at least one toy
• Clara is a young woman
• Clara and Laura are different individuals
• Lalu is the same person as Laura
• To dress a toy is a special case of playing, where the toy is a doll
• Only Lenore is a doll having Emily as a doll. Minnie has Emily as a doll (hint: use owl:hasKey)
• Clara is sister of Lalu's, Lalu is daughter of Aldo's, therefore Clara is daughter of Aldo's
• Toy is a generic class
• Clara played with Emily only for one month

Then, complete the ontology by adding inverse, symmetric, and transitive properties.

Solutions: