A hand can be on a back.Logical formLearned from250 sentences. A back can be to goal.Logical formLearned from248 sentences. A (back yard) may pertain-to a female.Logical formLearned from246 sentences. A back may pertain-to a machine.Logical formLearned from245 sentences. A back may pertain-to jeans.Logical formLearned from241 sentences. Backs may pertain-to a country.Logical formLearned from241 sentences. A person may arch a back.Logical formLearned from240 sentences. A person may rub a back.Logical formLearned from238 sentences. A male may play as a back.Logical formLearned from234 sentences. A female may lie on a back.Logical formLearned from233 sentences. A back may be broken.Logical formLearned from232 sentences. A back may pertain-to an auditorium.Logical formLearned from231 sentences. A person may lie-flat on a back.Logical formLearned from230 sentences. A voice can be in a back of a head.Logical formLearned from230 sentences. A back may pertain-to a US-president.Logical formLearned from230 sentences.