An (ash cloud) may cause an (airspace shutdown).Logical formLearned from7 sentences. A brown cloud can be constituted-of-or-filled-with ash.Logical formLearned from7 sentences. Light can be in clouds.Logical formLearned from7 sentences. Clouds can be constituted-of-or-filled-with sperm.Logical formLearned from7 sentences. A killing can be a cloud.Logical formLearned from7 sentences. A cloud can be constituted-of-or-filled-with leaflets.Logical formLearned from7 sentences. (Ice crystals) can be in clouds.Logical formLearned from7 sentences. (Heat clouds) may consist of gases.Logical formLearned from7 sentences. Blasts may show a cloud of smoke.Logical formLearned from7 sentences. Clouds may reach some kilometers.Logical formLearned from7 sentences. Clouds of black smoke may spew from cars.Logical formLearned from7 sentences. A nature may pertain-to a (smoke cloud).Logical formLearned from7 sentences. A (silver lining) may pertain-to a cloud.Logical formLearned from7 sentences. (Storm clouds) may gather on a horizon.Logical formLearned from7 sentences. An issue may cast a cloud.Logical formLearned from7 sentences.