A (birthday present) may pertain-to a person.Logical formLearned from1 765 sentences. Yesterday can be a birthday.Logical formLearned from1 743 sentences. A whole may pertain-to a (birthday month).Logical formLearned from1 724 sentences. Persons may celebrate a birthday.Logical formLearned from1 714 sentences. A person may have a birthday.Logical formLearned from1 622 sentences. A purchase can be for a whole of a (birthday month).Logical formLearned from1 603 sentences. A male may celebrate a birthday.Logical formLearned from1 553 sentences. A weekday can be a birthday.Logical formLearned from1 553 sentences. Honor may pertain-to a birthday.Logical formLearned from1 550 sentences. A birthday may pertain-to a mom.Logical formLearned from1 478 sentences. A birthday may pertain-to a dad.Logical formLearned from1 398 sentences. A birthday may pertain-to a mother.Logical formLearned from1 269 sentences. A birthday may pertain-to a son.Logical formLearned from1 166 sentences. A birthday may pertain-to a daughter.Logical formLearned from1 155 sentences. A birthday may pertain-to persons.Logical formLearned from1 112 sentences.