A cloud can be over a country.Logical formLearned from6 sentences. An (ash cloud) can be from a (volcano eruption).Logical formLearned from6 sentences. Some civilians may be left by an (ash cloud) be stranded.Logical formLearned from6 sentences. An (ash cloud) may be caused by a volcano.Logical formLearned from6 sentences. Passengers may be trapped by a cloud of (volcano ash).Logical formLearned from6 sentences. A tinge can be in clouds.Logical formLearned from6 sentences. An (ash cloud) may disperse.Logical formLearned from6 sentences. An (ash cloud) may emanate from an icelandic volcano.Logical formLearned from6 sentences. An (ash cloud) may spread across a continent.Logical formLearned from6 sentences. Winds may blow a cloud.Logical formLearned from6 sentences. An (ash cloud) may head.Logical formLearned from6 sentences. Revenue can be from (cloud computing).Logical formLearned from6 sentences. Worries may cast a cloud.Logical formLearned from6 sentences. Nets may catch clouds.Logical formLearned from6 sentences. A (harvest water) may pertain-to (cloud catchers).Logical formLearned from6 sentences.