A processing can be abstract.Logical formLearned from13 sentences. Activities can be abstract.Logical formLearned from13 sentences. A (bronze sculpture) can be abstract.Logical formLearned from13 sentences. An (art piece) can be abstract.Logical formLearned from13 sentences. Philosophies can be abstract.Logical formLearned from13 sentences. A contemplation can be abstract.Logical formLearned from13 sentences. A noise can be abstract.Logical formLearned from13 sentences. A desire can be abstract.Logical formLearned from13 sentences. Questions may sound abstract.Logical formLearned from13 sentences. A logo can be abstract.Logical formLearned from13 sentences. A string can be abstract.Logical formLearned from13 sentences. Privileges can be abstract.Logical formLearned from13 sentences. A question can be abstract.Logical formLearned from13 sentences. Marks can be abstract.Logical formLearned from13 sentences. An idea can be abstract.Logical formLearned from13 sentences.