A sister may celebrate a birthday.Logical formLearned from29 sentences. A (birthday party) may pertain-to a boy.Logical formLearned from29 sentences. A person may miss a (birthday party).Logical formLearned from29 sentences. Persons can be for a birthday.Logical formLearned from29 sentences. A male may wish a person birthday.Logical formLearned from29 sentences. Part may pertain-to a (birthday celebration).Logical formLearned from29 sentences. A book can be for a birthday.Logical formLearned from29 sentences. A birthday may pertain-to a woman.Logical formLearned from29 sentences. A birthday can be decent.Logical formLearned from28 sentences. A female may miss a birthday.Logical formLearned from28 sentences. Some months can be after a birthday.Logical formLearned from28 sentences. A (birthday party) can be for a husband.Logical formLearned from28 sentences. A week may celebrate a birthday.Logical formLearned from28 sentences. A person may go on a birthday.Logical formLearned from28 sentences. A (birthday cake) may pertain-to persons.Logical formLearned from28 sentences.