An (ash cloud) can be in a continent.Logical formLearned from9 sentences. (Travel disruptions) can be due to an (ash cloud).Logical formLearned from9 sentences. An (ash cloud) may disrupt (air traffic).Logical formLearned from9 sentences. Clouds can be from a volcano.Logical formLearned from9 sentences. (Burning tires) may send a cloud of black smoke.Logical formLearned from9 sentences. Clouds may hover over a course.Logical formLearned from9 sentences. The sky may be darkened with (storm clouds).Logical formLearned from9 sentences. A (mushroom cloud) can be fiery.Logical formLearned from9 sentences. A cloud may move in_front_of the sun.Logical formLearned from9 sentences. Clouds of white smoke may rise.Logical formLearned from9 sentences. A cloud of charges may be removed.Logical formLearned from9 sentences. A person may leave under a cloud.Logical formLearned from9 sentences. Clouds of gas may rise_up at a site.Logical formLearned from9 sentences. A cloud may hang over talks.Logical formLearned from9 sentences. A cloud can be greenish.Logical formLearned from9 sentences.