An industrial city can be gray.Logical formLearned from10 sentences. A neck can be gray.Logical formLearned from10 sentences. A slush can be gray.Logical formLearned from10 sentences. A crust can be gray.Logical formLearned from10 sentences. A gray hair can be on a head.Logical formLearned from10 sentences. A stucco can be gray.Logical formLearned from10 sentences. A growth can be gray.Logical formLearned from10 sentences. Undersides can be gray.Logical formLearned from10 sentences. Silks can be gray.Logical formLearned from10 sentences. Carpet can be gray.Logical formLearned from10 sentences. Blazers can be gray.Logical formLearned from10 sentences. A (female passenger) can be with gray hair.Logical formLearned from10 sentences. Gray hair can be in eyes.Logical formLearned from10 sentences. A lady can be with gray hair.Logical formLearned from10 sentences. Cobblestones can be gray.Logical formLearned from10 sentences.