A back may pertain-to a camel.Logical formLearned from495 sentences. Hair can be on a back of a neck.Logical formLearned from495 sentences. Backs may pertain-to hands.Logical formLearned from494 sentences. A back can be sore.Logical formLearned from490 sentences. A back can be to a male.Logical formLearned from487 sentences. A back can be strong.Logical formLearned from480 sentences. A back may pertain-to a country.Logical formLearned from478 sentences. A male may rub a back.Logical formLearned from476 sentences. A hand may be tied behind a back.Logical formLearned from468 sentences. A back may pertain-to pants.Logical formLearned from468 sentences. A back may pertain-to an unit.Logical formLearned from463 sentences. A person may hurt a back.Logical formLearned from454 sentences. A back may pertain-to a door.Logical formLearned from451 sentences. A back may pertain-to a case.Logical formLearned from444 sentences. A person may sit in a back.Logical formLearned from441 sentences.