Some flights can be around an (ash cloud).Logical formLearned from10 sentences. A cloud can be constituted-of-or-filled-with (tax troubles).Logical formLearned from10 sentences. Nominees may withdraw under a cloud of (tax troubles).Logical formLearned from10 sentences. Groups can be constituted-of-or-filled-with (rain clouds).Logical formLearned from10 sentences. Clouds can be constituted-of-or-filled-with radioactive dust.Logical formLearned from10 sentences. A monarch may cite low clouds.Logical formLearned from10 sentences. Scientists may look to clouds.Logical formLearned from10 sentences. Clouds can be for clues to (climate change).Logical formLearned from10 sentences. A cloud of dust may fill air.Logical formLearned from10 sentences. A black cloud may drift over a world-city.Logical formLearned from10 sentences. The sun may cut through clouds.Logical formLearned from10 sentences. Clouds may cover mountains.Logical formLearned from10 sentences. Clouds of smoke may waft across a compound.Logical formLearned from10 sentences. A cloud may contain dioxin.Logical formLearned from10 sentences. Clouds may move_in on a (landing site).Logical formLearned from10 sentences.