Roots can be gray.Logical formLearned from50 sentences. Skies can be gray.Logical formLearned from49 sentences. A kitty can be gray.Logical formLearned from49 sentences. Leaves can be gray.Logical formLearned from49 sentences. A tunic can be gray.Logical formLearned from48 sentences. A hat can be gray.Logical formLearned from48 sentences. Hair can be gray.Logical formLearned from48 sentences. Feathers can be gray.Logical formLearned from48 sentences. An overcoat can be gray.Logical formLearned from48 sentences. A double-breasted suit can be gray.Logical formLearned from48 sentences. A foliage can be gray.Logical formLearned from48 sentences. A town can be gray.Logical formLearned from48 sentences. An ink can be gray.Logical formLearned from47 sentences. Sheets can be gray.Logical formLearned from47 sentences. A gray area may pertain-to a law.Logical formLearned from47 sentences.