A person may have a (birthday present).Logical formLearned from21 sentences. A (birthday buddy) may pertain-to a person.Logical formLearned from21 sentences. (Birthday pictures) may pertain-to a person.Logical formLearned from21 sentences. Days may undergo a birthday.Logical formLearned from21 sentences. A female may say birthday.Logical formLearned from21 sentences. A (birthday eve) may pertain-to a person.Logical formLearned from21 sentences. A female may call a person on a birthday.Logical formLearned from21 sentences. A male may enjoy a birthday.Logical formLearned from21 sentences. A person may get a (birthday gift).Logical formLearned from21 sentences. A person can be (birthday present).Logical formLearned from21 sentences. A (birthday present) can be from parents.Logical formLearned from21 sentences. A world-city may undergo a birthday.Logical formLearned from21 sentences. A female may receive for a birthday.Logical formLearned from21 sentences. A (birthday post) may pertain-to a female.Logical formLearned from21 sentences. A (birthday dress) may pertain-to a female.Logical formLearned from21 sentences.