Cloud may prevent persons from approaching an area.Logical formLearned from5 sentences. A brown cloud may appear.Logical formLearned from5 sentences. Clouds may diminish.Logical formLearned from5 sentences. A world-city may cast a dark cloud.Logical formLearned from5 sentences. Clouds may lead to a chance of showers.Logical formLearned from5 sentences. A country can be a dark cloud.Logical formLearned from5 sentences. A pope may swoop_down from (storm clouds).Logical formLearned from5 sentences. A top may disappear into (rain clouds).Logical formLearned from5 sentences. A series can be constituted-of-or-filled-with (ash clouds).Logical formLearned from5 sentences. An eruption may follow a series of (ash clouds).Logical formLearned from5 sentences. A weather-service may forecast clouds.Logical formLearned from5 sentences. A break can be in clouds.Logical formLearned from5 sentences. A cloud of dust may blanket a country.Logical formLearned from5 sentences. Dark clouds may scud over a stadium.Logical formLearned from5 sentences. Clouds can be constituted-of-or-filled-with (carbon monoxide).Logical formLearned from5 sentences.