. Considérons, pour illustrer ces propriétés, un objet genou composé d'une rotule et d'autres composants. La destruction de la rotule entraîne la destruction du genou et réciproquement. De plus

. Exemple, Considérons le domaine culinaire dans lequel l'opposé de la notion de salé est le sucré

. Il-est-clair-que-d-'un-point-de-vue-ensembliste, la négation de salé (ou son complémentaire) représente tous les autres types de cuisine exceptée la cuisine salé. Par contre, l'opposé du salé (tel que nous avons déni la notion d'opposition) représente simplement la cuisine sucrée. D'un point de vue enrichissement de requête, si la requête initiale ASK sucré :cuisine est saisie, le système pourra enrichir la requête de telle façon que lors de son évaluation il ne retourne aucune page concernant la cuisine salée

. Le-moyen-de-construire-les, WPgraphs et W 3 Graphs associés aux pages Web retournées par le moteur de recherche usuel suivant l'ontologie du domaine sélectionnée, d'enrichir la requête initiale et de l'évaluer sur la structure logique des graphes

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