(Gas explosions) can be in (apartment buildings).Logical formLearned from49 sentences. A person can be behind explosions.Logical formLearned from49 sentences. A man may be killed in an explosion.Logical formLearned from49 sentences. An explosion can be in a tunnel.Logical formLearned from49 sentences. Hours can be after an explosion.Logical formLearned from48 sentences. A nuclear weapon may undergo an explosion.Logical formLearned from48 sentences. A volcano may undergo an explosion.Logical formLearned from48 sentences. A male may survive an explosion.Logical formLearned from48 sentences. An explosion may shake a building.Logical formLearned from48 sentences. Ethnic violence may undergo an explosion.Logical formLearned from48 sentences. An explosion can be at a (gas station).Logical formLearned from48 sentences. A person may die in an explosion.Logical formLearned from48 sentences. An explosion may cause casualties.Logical formLearned from48 sentences. Some workers may be killed in an explosion.Logical formLearned from47 sentences. A vicinity may pertain-to an explosion.Logical formLearned from47 sentences.