A cloud may form.Logical formLearned from15 sentences. A surface may pertain-to clouds.Logical formLearned from15 sentences. Cloud may undergo an understanding.Logical formLearned from15 sentences. A male can be in clouds.Logical formLearned from15 sentences. A cloud can be low.Logical formLearned from15 sentences. Clouds may blow.Logical formLearned from15 sentences. Black clouds may come with winds.Logical formLearned from15 sentences. Clouds can be thin.Logical formLearned from15 sentences. A cloud may be formed.Logical formLearned from15 sentences. A cloud can be constituted-of-or-filled-with (ammonia gas).Logical formLearned from15 sentences. A (mushroom cloud) can be white.Logical formLearned from15 sentences. A cloud can be constituted-of-or-filled-with dry ice.Logical formLearned from15 sentences. A cloud may hang over a person.Logical formLearned from15 sentences. A cloud can be constituted-of-or-filled-with exhaust.Logical formLearned from15 sentences. A radioactive cloud can be across a continent.Logical formLearned from15 sentences.