A world can be gray.Logical formLearned from171 sentences. A person can be gray.Logical formLearned from169 sentences. A carpet can be gray.Logical formLearned from167 sentences. A man can be with gray hair.Logical formLearned from163 sentences. A car can be gray.Logical formLearned from162 sentences. A shark can be gray.Logical formLearned from156 sentences. A rock can be gray.Logical formLearned from155 sentences. A mist can be gray.Logical formLearned from153 sentences. A weather can be gray.Logical formLearned from147 sentences. A (sweat shirt) can be gray.Logical formLearned from144 sentences. An uniform can be gray.Logical formLearned from143 sentences. A concrete can be gray.Logical formLearned from141 sentences. Plastic can be gray.Logical formLearned from140 sentences. A city can be gray.Logical formLearned from140 sentences. A mustache can be gray.Logical formLearned from135 sentences.