A duty of solidarity may become an imperative of a time.Logical formLearned from3 sentences. (Missile defense) can be an imperative.Logical formLearned from3 sentences. A man may hold to an imperative.Logical formLearned from3 sentences. A reminder may pertain-to an imperative.Logical formLearned from3 sentences. Democracy can be an imperative.Logical formLearned from3 sentences. Rich countries may have a moral imperative.Logical formLearned from3 sentences. Imperatives may change.Logical formLearned from3 sentences. Efforts may be aimed at reminding a government of a country.Logical formLearned from3 sentences. Species can be constituted-of-or-filled-with imperative.Logical formLearned from3 sentences. Persons may have some imperative.Logical formLearned from3 sentences. A list of imperatives may begin with a performance.Logical formLearned from3 sentences. Imperatives may pertain-to a world-city.Logical formLearned from3 sentences. An imperative can be for government.Logical formLearned from3 sentences. A country may recognize an imperative.Logical formLearned from3 sentences. An instrument may recognize imperatives of public safety.Logical formLearned from3 sentences.