Smoke may obscure a target.Logical formLearned from2 sentences. Dust may obscure a view.Logical formLearned from2 sentences. A choice may obscure recognition.Logical formLearned from2 sentences. Particles may obscure visibility.Logical formLearned from2 sentences. A hat may obscure eyes.Logical formLearned from2 sentences. Attitudes may obscure contributions.Logical formLearned from2 sentences. A haze may obscure some landmarks.Logical formLearned from2 sentences. A planet may obscure by a building.Logical formLearned from2 sentences. Pages may obscure a view.Logical formLearned from2 sentences. A lettering may obscure by (space dust).Logical formLearned from2 sentences. A geology of a zone may obscure by a wind.Logical formLearned from2 sentences. A nose of an aircraft may obscure a view.Logical formLearned from2 sentences. A sandstorm may obscure a battlefield.Logical formLearned from2 sentences. A light may obscure by fog.Logical formLearned from2 sentences. A light may obscure by (dust clouds).Logical formLearned from2 sentences.