Salt can be gray.Logical formLearned from39 sentences. Steel can be gray.Logical formLearned from39 sentences. Flannels can be gray.Logical formLearned from39 sentences. Circles can be gray.Logical formLearned from39 sentences. Silk can be gray.Logical formLearned from39 sentences. A bag can be gray.Logical formLearned from38 sentences. A spot can be gray.Logical formLearned from38 sentences. A wood can be gray.Logical formLearned from38 sentences. A cast can be gray.Logical formLearned from38 sentences. A structure can be gray.Logical formLearned from38 sentences. A scarf can be gray.Logical formLearned from38 sentences. A gray hair can be wavy.Logical formLearned from38 sentences. A (cowboy hat) can be gray.Logical formLearned from38 sentences. A crew can be gray.Logical formLearned from37 sentences. A son can be gray.Logical formLearned from37 sentences.