A sale can be necessary.Logical formLearned from25 sentences. Some precautions can be necessary.Logical formLearned from25 sentences. A qualification can be necessary.Logical formLearned from25 sentences. A show of force can be necessary.Logical formLearned from25 sentences. A coup can be necessary.Logical formLearned from25 sentences. A barrier can be necessary.Logical formLearned from25 sentences. Proposals can be necessary.Logical formLearned from25 sentences. Economic reforms can be necessary.Logical formLearned from24 sentences. A cut can be necessary.Logical formLearned from24 sentences. A military operation can be necessary.Logical formLearned from24 sentences. Responses can be necessary.Logical formLearned from24 sentences. A break can be necessary.Logical formLearned from24 sentences. A class can be necessary.Logical formLearned from24 sentences. A mechanism can be necessary.Logical formLearned from24 sentences. Functions can be necessary.Logical formLearned from24 sentences.