A back may pertain-to a right hand.Logical formLearned from172 sentences. A back may pertain-to a calf.Logical formLearned from171 sentences. A back may pertain-to a page.Logical formLearned from171 sentences. A back may pertain-to a dollar.Logical formLearned from171 sentences. Problems can be with a back.Logical formLearned from171 sentences. A back may pertain-to a wagon.Logical formLearned from171 sentences. A monkey can be on a back.Logical formLearned from170 sentences. Backs may pertain-to fingers.Logical formLearned from170 sentences. A back can be flat.Logical formLearned from170 sentences. A wind can be at backs.Logical formLearned from168 sentences. A back may pertain-to a nose.Logical formLearned from168 sentences. Backs can be strong.Logical formLearned from166 sentences. A back may be hurted.Logical formLearned from166 sentences. A back may pertain-to a refrigerator.Logical formLearned from166 sentences. A back may pertain-to a man.Logical formLearned from165 sentences.