A volcanic eruption may cause (air traffic chaos).Logical formLearned from2 sentences. An (ash alarm) can be volcanic.Logical formLearned from2 sentences. Hazards can be from volcanic ash.Logical formLearned from2 sentences. Airspace may be affected by a volcanic ash.Logical formLearned from2 sentences. A zone can be with high density of a volcanic ash.Logical formLearned from2 sentences. (Aviation crises) may result from volcanic eruptions.Logical formLearned from2 sentences. A paralysis can be volcanic.Logical formLearned from2 sentences. (Air carriers) may cancel flights to a continent on volcanic ash.Logical formLearned from2 sentences. A volcanic ash may consist of materials.Logical formLearned from2 sentences. Problems may be caused by a volcanic ash.Logical formLearned from2 sentences. Damage can be by a volcanic ash.Logical formLearned from2 sentences. A volcanic ash may contain particles of glass.Logical formLearned from2 sentences. An ash can be from a volcanic eruption.Logical formLearned from2 sentences. A cloud of volcanic ash may persist.Logical formLearned from2 sentences. A cloud of volcanic ash may plunge (air travel).Logical formLearned from2 sentences.