A back may pertain-to a male.Logical formLearned from120 066 sentences. A back may pertain-to a person.Logical formLearned from98 365 sentences. A back may pertain-to a female.Logical formLearned from47 482 sentences. A back may pertain-to a head.Logical formLearned from26 481 sentences. A back may pertain-to a neck.Logical formLearned from16 848 sentences. A back may pertain-to a mind.Logical formLearned from15 839 sentences. Backs may pertain-to persons.Logical formLearned from7 847 sentences. A back may pertain-to a hand.Logical formLearned from7 103 sentences. A back may pertain-to a throat.Logical formLearned from5 776 sentences. A back may pertain-to a car.Logical formLearned from4 664 sentences. A back may pertain-to a room.Logical formLearned from4 547 sentences. A back may pertain-to a net.Logical formLearned from4 339 sentences. A back may pertain-to a house.Logical formLearned from3 834 sentences. A back may pertain-to persons.Logical formLearned from3 046 sentences. A back can be welcome.Logical formLearned from2 986 sentences.