A cloud can be regulatory.Logical formLearned from7 sentences. Clouds of gas may rise into the sky.Logical formLearned from7 sentences. A crash may cast a cloud.Logical formLearned from7 sentences. (State tv footage) may show a cloud of smoke.Logical formLearned from7 sentences. A bomb may equal a (mushroom cloud).Logical formLearned from7 sentences. Some persons may be killed by a (gas cloud).Logical formLearned from7 sentences. A dark cloud may loom above a region.Logical formLearned from7 sentences. A cloud can be constituted-of-or-filled-with misfortune.Logical formLearned from7 sentences. A cloud can be due to (batting form).Logical formLearned from7 sentences. A cloud can be constituted-of-or-filled-with ammonia.Logical formLearned from7 sentences. Clouds can be threatening.Logical formLearned from7 sentences. A world-city may cast a cloud.Logical formLearned from7 sentences. A black cloud of dust may overcast the blue sky.Logical formLearned from7 sentences. A black mass can be constituted-of-or-filled-with clouds.Logical formLearned from7 sentences. A cloud of smoke may rise over a city.Logical formLearned from7 sentences.