Concern can be about tension.Logical formLearned from57 sentences. A (surface tension) may pertain-to water.Logical formLearned from56 sentences. Tension can be perpetual.Logical formLearned from56 sentences. A move may exacerbate tensions.Logical formLearned from56 sentences. Tension may undergo an increase.Logical formLearned from56 sentences. Part may pertain-to tension.Logical formLearned from56 sentences. Tension may undergo an escalation.Logical formLearned from56 sentences. Tensions can be pent-up.Logical formLearned from56 sentences. Tension can be in the north.Logical formLearned from56 sentences. Tensions may simmer in a region.Logical formLearned from56 sentences. Concern can be over tensions.Logical formLearned from56 sentences. Tensions may increase.Logical formLearned from55 sentences. Tensions can be on a korean peninsula.Logical formLearned from55 sentences. Signs can be constituted-of-or-filled-with tension.Logical formLearned from55 sentences. Tensions can be between albanians.Logical formLearned from55 sentences.