Services may be caused by a cloud of volcanic ash.Logical formLearned from3 sentences. Flights may owe to a cloud of volcanic ash.Logical formLearned from3 sentences. A volcanic ash can be on equipment.Logical formLearned from3 sentences. A volcano may spew a column of volcanic plume.Logical formLearned from3 sentences. A column can be constituted-of-or-filled-with volcanic plume.Logical formLearned from3 sentences. (Air travellers) may be stranded around the world by a volcanic ash.Logical formLearned from3 sentences. Airspace may be paralyzed by volcanic ash.Logical formLearned from3 sentences. A volcanic ash may paralyse (air travel).Logical formLearned from3 sentences. Volcanic ash may keep some leaders.Logical formLearned from3 sentences. A volcanic eruption may force an (ash cloud).Logical formLearned from3 sentences. A disruption can be volcanic.Logical formLearned from3 sentences. Volcanic ash may shut_down airports.Logical formLearned from3 sentences. Volcanic ash can be into airspace.Logical formLearned from3 sentences. A cloud of volcanic ash may spread over a continent.Logical formLearned from3 sentences. Volcanic ash may close airports.Logical formLearned from3 sentences.