A flare-up can be in tension.Logical formLearned from27 sentences. A main source can be constituted-of-or-filled-with tension.Logical formLearned from27 sentences. Tensions can be over a nuclear crisis.Logical formLearned from27 sentences. Tensions can be over a border.Logical formLearned from27 sentences. Tensions can be between a group.Logical formLearned from27 sentences. An issue may cause tension.Logical formLearned from27 sentences. Tensions may recede.Logical formLearned from27 sentences. Tensions can be among ethnic groups.Logical formLearned from27 sentences. Tensions can be in a world-city.Logical formLearned from27 sentences. Tensions can be unprecedented.Logical formLearned from27 sentences. Concerns can be over tension.Logical formLearned from27 sentences. Actions may escalate tensions.Logical formLearned from27 sentences. Tension can be between an army.Logical formLearned from27 sentences. A cycle can be constituted-of-or-filled-with tension.Logical formLearned from27 sentences. A concern can be over a state of tension.Logical formLearned from26 sentences.