Lions can be extinct.Logical formLearned from2 sentences. An island can be a remnant of an extinct volcano.Logical formLearned from2 sentences. An extinct volcano may be formed.Logical formLearned from2 sentences. An ageset can be extinct.Logical formLearned from2 sentences. A group can be constituted-of-or-filled-with extinct plants.Logical formLearned from2 sentences. A tradition of values of signs can be extinct.Logical formLearned from2 sentences. An independent city can be extinct.Logical formLearned from2 sentences. Placental mammals can be extinct.Logical formLearned from2 sentences. A cheetah can be extinct.Logical formLearned from2 sentences. Costumes can be extinct.Logical formLearned from2 sentences. Megafauna may go extinct.Logical formLearned from2 sentences. A cat can be extinct.Logical formLearned from2 sentences. Ecosystems can be extinct.Logical formLearned from2 sentences. Views can be extinct.Logical formLearned from2 sentences. A (terror bird) can be extinct.Logical formLearned from2 sentences.