(Dust grains) can be cometary.Logical formLearned from12 sentences. A fraction may pertain-to dust.Logical formLearned from12 sentences. Dust can be a problem.Logical formLearned from12 sentences. Dust can be sticky.Logical formLearned from12 sentences. Dust may be clawed.Logical formLearned from12 sentences. Dust can be in a car.Logical formLearned from12 sentences. Dust can be in a region.Logical formLearned from12 sentences. Dust can be from a collapse.Logical formLearned from12 sentences. Dust can be blown.Logical formLearned from12 sentences. Dust can be thick that something-is-the-case.Logical formLearned from12 sentences. A poof can be constituted-of-or-filled-with dust.Logical formLearned from12 sentences. Storms can be constituted-of-or-filled-with dust.Logical formLearned from12 sentences. An increase can be in dust.Logical formLearned from11 sentences. (Dust storms) can be an occurrence.Logical formLearned from11 sentences. Some areas may experience a passage of (dust devils).Logical formLearned from11 sentences.