An explosion may cause a fire.Logical formLearned from7 sentences. A (gas explosion) may occur at some p.m..Logical formLearned from7 sentences. An explosion may occur on a bus.Logical formLearned from7 sentences. An explosion may hit some (subway station).Logical formLearned from7 sentences. Some persons may be injured in some (bomb explosions).Logical formLearned from7 sentences. An explosion may occur in area.Logical formLearned from7 sentences. A (mine explosion) can be in an area.Logical formLearned from7 sentences. Casualties may pertain-to an explosion.Logical formLearned from7 sentences. An (explosion crater) can be volcanic.Logical formLearned from7 sentences. An American soldier may be killed by a (roadside bomb explosion).Logical formLearned from7 sentences. Explosions may undergo a (death toll).Logical formLearned from7 sentences. Some (bomb explosions) may rock a capital.Logical formLearned from7 sentences. An explosion may end a period of calm.Logical formLearned from7 sentences. An explosion can be from outside.Logical formLearned from7 sentences. An explosion may occur in a facility of a company.Logical formLearned from7 sentences.