A back may pertain-to a cupboard.Logical formLearned from151 sentences. A back may pertain-to a board.Logical formLearned from151 sentences. A female may lie-flat on a back.Logical formLearned from150 sentences. A back may pertain-to an office.Logical formLearned from149 sentences. A right side may pertain-to a back.Logical formLearned from149 sentences. A male may stand with a back.Logical formLearned from148 sentences. A back may pertain-to a photo.Logical formLearned from147 sentences. A back may hurt bad.Logical formLearned from147 sentences. Hands may be clasped behind a back.Logical formLearned from147 sentences. A back may pertain-to a father.Logical formLearned from146 sentences. A male may watch a back.Logical formLearned from145 sentences. A back may pertain-to a woman.Logical formLearned from145 sentences. A person may throw_out a back.Logical formLearned from145 sentences. A back may pertain-to a collar.Logical formLearned from144 sentences. Persons may get a back.Logical formLearned from144 sentences.