Letter-writing can be extinct.Logical formLearned from5 sentences. A class of applications can be extinct.Logical formLearned from5 sentences. Women can be extinct.Logical formLearned from5 sentences. Some megafaunas can be extinct.Logical formLearned from5 sentences. Tigers can be extinct.Logical formLearned from5 sentences. A plant may go extinct.Logical formLearned from5 sentences. Ofthings can be extinct.Logical formLearned from5 sentences. Large groups can be extinct.Logical formLearned from5 sentences. A cheetah can be extinct.Logical formLearned from5 sentences. Horses can be extinct.Logical formLearned from5 sentences. A specie can be extinct.Logical formLearned from5 sentences. A beast can be extinct.Logical formLearned from5 sentences. (Investment banks) can be extinct.Logical formLearned from5 sentences. Species may be presumed extinct.Logical formLearned from5 sentences. Frogs can be extinct.Logical formLearned from5 sentences.