Problems can be abstract.Logical formLearned from4 sentences. A status can be abstract.Logical formLearned from4 sentences. A decision-making can be abstract.Logical formLearned from4 sentences. A (control number) can be abstract.Logical formLearned from4 sentences. Computational models can be abstract.Logical formLearned from4 sentences. A bird can be abstract.Logical formLearned from4 sentences. An opinion may be based on a theory of abstract (state machines).Logical formLearned from4 sentences. Disciplines can be abstract.Logical formLearned from4 sentences. Publications can be abstract.Logical formLearned from4 sentences. Presenter can be abstract.Logical formLearned from4 sentences. Downloads can be abstract.Logical formLearned from4 sentences. Works can be by abstract artist.Logical formLearned from4 sentences. Economic models can be abstract.Logical formLearned from4 sentences. An ontology can be abstract.Logical formLearned from4 sentences. Analogies can be abstract.Logical formLearned from4 sentences.