A tooth may pertain-to shark.Logical formLearned from10 sentences. A male may be eaten by a shark.Logical formLearned from10 sentences. A surfer may be attacked by a shark.Logical formLearned from10 sentences. Sharks can be unbeaten.Logical formLearned from10 sentences. A shark can be an animal.Logical formLearned from10 sentences. A mother may pertain-to a shark.Logical formLearned from10 sentences. Visitors can be to a (shark exhibit).Logical formLearned from10 sentences. A shark may bite a male.Logical formLearned from10 sentences. Reports can be constituted-of-or-filled-with (shark attacks).Logical formLearned from10 sentences. A doctor may watch (shark attack).Logical formLearned from10 sentences. Sharks can be upstart.Logical formLearned from10 sentences. Attacks can be by sharks.Logical formLearned from10 sentences. Sharks may be threatened with extinction.Logical formLearned from10 sentences. Sharks can be frozen.Logical formLearned from10 sentences. (Shark attacks) can be uncommon.Logical formLearned from10 sentences.