A service can be useful.Logical formLearned from172 sentences. Concepts can be useful.Logical formLearned from172 sentences. Data can be useful.Logical formLearned from171 sentences. Members can be useful.Logical formLearned from170 sentences. Additions can be useful.Logical formLearned from168 sentences. A comparison can be useful.Logical formLearned from165 sentences. Work can be useful.Logical formLearned from164 sentences. A (background information) can be useful.Logical formLearned from161 sentences. A class can be useful.Logical formLearned from161 sentences. A technology can be useful.Logical formLearned from161 sentences. Compounds can be useful.Logical formLearned from160 sentences. An analogy can be useful.Logical formLearned from160 sentences. A metaphor can be useful.Logical formLearned from159 sentences. Elements can be useful.Logical formLearned from158 sentences. An index can be useful.Logical formLearned from157 sentences.