A calm can be prolonged.Logical formLearned from20 sentences. A sell-off can be prolonged.Logical formLearned from20 sentences. A relationship can be prolonged.Logical formLearned from19 sentences. Exchanges can be prolonged.Logical formLearned from19 sentences. A hunger can be prolonged.Logical formLearned from19 sentences. A heavy rain can be prolonged.Logical formLearned from19 sentences. Years can be prolonged.Logical formLearned from19 sentences. Wearings can be prolonged.Logical formLearned from19 sentences. A painful erection can be prolonged.Logical formLearned from19 sentences. A basis can be prolonged.Logical formLearned from19 sentences. A practice can be prolonged.Logical formLearned from19 sentences. A standing ovation can be prolonged.Logical formLearned from19 sentences. A military action can be prolonged.Logical formLearned from19 sentences. A slumber can be prolonged.Logical formLearned from19 sentences. A flow can be prolonged.Logical formLearned from19 sentences.