A duck can be extinct.Logical formLearned from6 sentences. Honours can be extinct.Logical formLearned from6 sentences. (Grizzly bears) can be extinct.Logical formLearned from6 sentences. Classical music can be extinct.Logical formLearned from6 sentences. A seal can be extinct.Logical formLearned from6 sentences. A company can be extinct.Logical formLearned from6 sentences. A prey can be extinct.Logical formLearned from6 sentences. Leopards can be extinct.Logical formLearned from6 sentences. (River dolphins) can be extinct.Logical formLearned from6 sentences. A (mountain goat) can be extinct.Logical formLearned from6 sentences. A world can be extinct.Logical formLearned from6 sentences. A way can be extinct.Logical formLearned from6 sentences. Predators can be extinct.Logical formLearned from6 sentences. Ibises can be extinct.Logical formLearned from6 sentences. Fish can be extinct.Logical formLearned from5 sentences.