(Painting practices) can be abstract.Logical formLearned from2 sentences. Economic growth can be an abstract concept.Logical formLearned from2 sentences. (Plaster forms) can be abstract.Logical formLearned from2 sentences. Answers to questions can be abstract.Logical formLearned from2 sentences. An early childhood may be unhampered by abstract reasoning.Logical formLearned from2 sentences. One can be abstract.Logical formLearned from2 sentences. Stars can be abstract.Logical formLearned from2 sentences. A verbal communication can be abstract.Logical formLearned from2 sentences. An abstract type may represent errors.Logical formLearned from2 sentences. (Machine runs) can be abstract.Logical formLearned from2 sentences. An abstract (state machine) can be distributed.Logical formLearned from2 sentences. A (language debugger) may be based on an abstract (state machine).Logical formLearned from2 sentences. Operational semantics can be abstract.Logical formLearned from2 sentences. (System requirements) can be abstract.Logical formLearned from2 sentences. An abstract machine may undergo construction.Logical formLearned from2 sentences.