Everyone can be productive.Logical formLearned from38 sentences. Levels can be productive.Logical formLearned from38 sentences. An achievement can be productive.Logical formLearned from38 sentences. A cropland can be productive.Logical formLearned from38 sentences. An economy can be productive.Logical formLearned from38 sentences. Investment can be in productive capacity.Logical formLearned from38 sentences. Sessions can be productive.Logical formLearned from38 sentences. (Oil fields) can be productive.Logical formLearned from37 sentences. Efforts can be productive.Logical formLearned from37 sentences. A company can be productive.Logical formLearned from37 sentences. Students can be productive.Logical formLearned from37 sentences. Contributions can be productive.Logical formLearned from37 sentences. A staff can be productive.Logical formLearned from37 sentences. A machine can be productive.Logical formLearned from37 sentences. A segment can be productive.Logical formLearned from36 sentences.