A thinker can be abstract.Logical formLearned from39 sentences. A male can be abstract.Logical formLearned from39 sentences. A class can be abstract.Logical formLearned from39 sentences. Construction can be abstract.Logical formLearned from39 sentences. A formalism can be abstract.Logical formLearned from38 sentences. A space can be abstract.Logical formLearned from38 sentences. A (submission deadline) can be abstract.Logical formLearned from38 sentences. A force can be abstract.Logical formLearned from38 sentences. A rhetoric can be abstract.Logical formLearned from38 sentences. An (oil painting) can be abstract.Logical formLearned from38 sentences. Power can be abstract.Logical formLearned from38 sentences. A reality can be abstract.Logical formLearned from38 sentences. Pathnames can be abstract.Logical formLearned from38 sentences. A sound can be abstract.Logical formLearned from37 sentences. A sculptor can be abstract.Logical formLearned from37 sentences.