Birthday can be in a us-state.Logical formLearned from36 sentences. A US-president may celebrate birthday.Logical formLearned from36 sentences. (Birthday wishes) may pertain-to a female.Logical formLearned from36 sentences. A friend may undergo a (birthday party).Logical formLearned from36 sentences. A singer may undergo a birthday.Logical formLearned from35 sentences. A princess may undergo a birthday.Logical formLearned from35 sentences. A birthday can be to a person.Logical formLearned from35 sentences. A (birthday present) may pertain-to a sister.Logical formLearned from35 sentences. A birthday can be memorable.Logical formLearned from35 sentences. A male may receive for a birthday.Logical formLearned from35 sentences. A birthday can be an one.Logical formLearned from35 sentences. A person may forget about a birthday.Logical formLearned from35 sentences. Birthdays may pertain-to other persons.Logical formLearned from35 sentences. Birthday can be to a husband.Logical formLearned from35 sentences. Birthdays can be fun.Logical formLearned from35 sentences.