Weapons can be necessary for a defense.Logical formLearned from9 sentences. A restraint can be necessary.Logical formLearned from9 sentences. Fathers can be necessary.Logical formLearned from9 sentences. Units can be necessary.Logical formLearned from9 sentences. A (rescue operation) can be necessary.Logical formLearned from9 sentences. Changes to (work practices) can be necessary.Logical formLearned from9 sentences. A switch can be necessary.Logical formLearned from9 sentences. A palestinian state can be necessary.Logical formLearned from9 sentences. Restructurings can be necessary.Logical formLearned from9 sentences. A hand can be necessary.Logical formLearned from9 sentences. A necessary condition can be a stabilization.Logical formLearned from9 sentences. A (stimulus package) can be necessary.Logical formLearned from9 sentences. Readiness can be necessary.Logical formLearned from9 sentences. Institutions can be necessary for a democracy.Logical formLearned from9 sentences. (Court review) can be necessary.Logical formLearned from9 sentences.