A back may pertain-to a US-city.Logical formLearned from164 sentences. A back may pertain-to a skirt.Logical formLearned from164 sentences. A back may go_out.Logical formLearned from163 sentences. A person may sleep on a back.Logical formLearned from163 sentences. A (stress fracture) can be in a back.Logical formLearned from162 sentences. A person may go to a back.Logical formLearned from161 sentences. A back may pertain-to a brother.Logical formLearned from160 sentences. A back may pertain-to a package.Logical formLearned from159 sentences. A back may pertain-to a set.Logical formLearned from158 sentences. A male may pat a back.Logical formLearned from158 sentences. A back may pertain-to a wrist.Logical formLearned from158 sentences. A male may have a back.Logical formLearned from158 sentences. A back may pertain-to a trailer.Logical formLearned from157 sentences. A back can be fine.Logical formLearned from157 sentences. A back may pertain-to teeth.Logical formLearned from157 sentences.