A philosophical principle can be abstract.Logical formLearned from3 sentences. Some abstract painting can be by a male.Logical formLearned from3 sentences. Reasoners can be abstract.Logical formLearned from3 sentences. Coins can be abstract.Logical formLearned from3 sentences. An obligation can be abstract.Logical formLearned from3 sentences. (Submission instructions) can be abstract.Logical formLearned from3 sentences. A human nature can be abstract.Logical formLearned from3 sentences. A violation can be abstract.Logical formLearned from3 sentences. A (tree representation) can be abstract.Logical formLearned from3 sentences. Introduction can be to abstract algebras.Logical formLearned from3 sentences. A (length mark) can be abstract.Logical formLearned from3 sentences. A topology can be abstract.Logical formLearned from3 sentences. A file can be abstract.Logical formLearned from3 sentences. Abstract concepts may be presented.Logical formLearned from3 sentences. Compilation can be to an abstract machine.Logical formLearned from3 sentences.