Persons may sing birthday.Logical formLearned from103 sentences. A person may celebrate a birthday.Logical formLearned from103 sentences. A male may remember a birthday.Logical formLearned from103 sentences. A person may enjoy a birthday.Logical formLearned from102 sentences. A birthday may pertain-to a prince.Logical formLearned from102 sentences. A (birthday celebration) may pertain-to persons.Logical formLearned from102 sentences. A (birthday party) may pertain-to a kid.Logical formLearned from102 sentences. A male may reach a birthday.Logical formLearned from102 sentences. A (birthday speech) may pertain-to a male.Logical formLearned from101 sentences. An age can be on a birthday.Logical formLearned from100 sentences. A birthday can be fantastic.Logical formLearned from100 sentences. A (birthday ..) may pertain-to a female.Logical formLearned from99 sentences. A birthday can be in a country.Logical formLearned from99 sentences. A birthday may pass.Logical formLearned from99 sentences. A (birthday card) may pertain-to a female.Logical formLearned from99 sentences.