Proceedings may last.Logical formLearned from27 sentences. An uncertainty may last.Logical formLearned from27 sentences. A mission may last some days.Logical formLearned from27 sentences. Some spacewalks may last some hours.Logical formLearned from27 sentences. Negotiations may last a year.Logical formLearned from27 sentences. Presence may last.Logical formLearned from27 sentences. A tournament may last.Logical formLearned from26 sentences. A plan may last.Logical formLearned from26 sentences. A clash may last.Logical formLearned from26 sentences. A fire may last.Logical formLearned from26 sentences. A relationship may last until a death.Logical formLearned from26 sentences. A firefight may last for some hours.Logical formLearned from26 sentences. A siege may last some months.Logical formLearned from26 sentences. Repairs may last until a month.Logical formLearned from26 sentences. An arrangement may last for some years.Logical formLearned from26 sentences.