Vigilance may remain necessary.Logical formLearned from4 sentences. Responses can be necessary.Logical formLearned from4 sentences. Polls can be necessary.Logical formLearned from4 sentences. Scope can be necessary.Logical formLearned from4 sentences. (Emergency legislation) can be necessary.Logical formLearned from4 sentences. A cease-fire can be necessary.Logical formLearned from4 sentences. Nuclear arms can be necessary.Logical formLearned from4 sentences. A visa can be necessary.Logical formLearned from4 sentences. A withdrawal of troops can be necessary.Logical formLearned from4 sentences. A response may be deemed necessary.Logical formLearned from4 sentences. (Benefit cuts) can be necessary.Logical formLearned from4 sentences. Public participation can be necessary.Logical formLearned from4 sentences. A working can be necessary.Logical formLearned from4 sentences. A change of planes can be necessary.Logical formLearned from4 sentences. Resources can be necessary for an implementation.Logical formLearned from4 sentences.