A stretch can be prolonged.Logical formLearned from57 sentences. An interrogation can be prolonged.Logical formLearned from56 sentences. Battles can be prolonged.Logical formLearned from56 sentences. A (drug use) can be prolonged.Logical formLearned from56 sentences. An interval can be prolonged.Logical formLearned from56 sentences. A stimulation can be prolonged.Logical formLearned from56 sentences. Harm can be prolonged.Logical formLearned from56 sentences. An exertion can be prolonged.Logical formLearned from56 sentences. A financial crisis can be prolonged.Logical formLearned from55 sentences. An economic stagnation can be prolonged.Logical formLearned from55 sentences. A gunbattle can be prolonged.Logical formLearned from55 sentences. A contraction can be prolonged.Logical formLearned from55 sentences. A stand-off can be prolonged.Logical formLearned from54 sentences. A cold can be prolonged.Logical formLearned from54 sentences. A (power struggle) can be prolonged.Logical formLearned from53 sentences.