A back may pertain-to a crowd.Logical formLearned from431 sentences. A back may pertain-to a pickup.Logical formLearned from424 sentences. A back may pertain-to eyes.Logical formLearned from421 sentences. Back can be in a day.Logical formLearned from421 sentences. A person can be in a back.Logical formLearned from420 sentences. A back may pertain-to a property.Logical formLearned from414 sentences. A back can be injured.Logical formLearned from410 sentences. A back may pertain-to a phone.Logical formLearned from410 sentences. Skin may pertain-to a back.Logical formLearned from409 sentences. Pain can be in a back.Logical formLearned from406 sentences. A (head back) may pertain-to a female.Logical formLearned from402 sentences. A back can be featured.Logical formLearned from402 sentences. A back may pertain-to a computer.Logical formLearned from399 sentences. Backs may pertain-to legs.Logical formLearned from397 sentences. A back can be high.Logical formLearned from394 sentences.