A female may pass a birthday.Logical formLearned from20 sentences. A card can be on a birthday.Logical formLearned from20 sentences. An album may be released on a birthday.Logical formLearned from20 sentences. A male may undergo birthdays.Logical formLearned from20 sentences. A good time may celebrate a birthday.Logical formLearned from20 sentences. A birthday may pertain-to a fiance.Logical formLearned from20 sentences. A daughter may undergo a (birthday party).Logical formLearned from20 sentences. A birthday can be sexy.Logical formLearned from20 sentences. Birthdays can be important.Logical formLearned from20 sentences. (Birthday wishes) can be happy.Logical formLearned from20 sentences. A worker may celebrate a birthday.Logical formLearned from20 sentences. A person may get a (birthday gift).Logical formLearned from20 sentences. Birthday can be a birthday.Logical formLearned from20 sentences. A person may eat (birthday cake).Logical formLearned from20 sentences. Some birthdays may come_up.Logical formLearned from20 sentences.