Material can be from wrecks.Logical formLearned from2 sentences. A wreck can be for sale.Logical formLearned from2 sentences. Wrecks can be constituted-of-or-filled-with importance.Logical formLearned from2 sentences. A (caution flag) may wave for a wreck.Logical formLearned from2 sentences. A person may survive a wreck.Logical formLearned from2 sentences. A wreck can be in an event.Logical formLearned from2 sentences. A wreck may be sold.Logical formLearned from2 sentences. A male may fill a wreck with gelignite.Logical formLearned from2 sentences. Wrecks can be constituted-of-or-filled-with (treasure ships).Logical formLearned from2 sentences. A policy may bar divers from recovering items.Logical formLearned from2 sentences. A male may survive a (train wreck).Logical formLearned from2 sentences. Heroism can be at a time of a wreck of a vessel.Logical formLearned from2 sentences. Actions can be during a wreck.Logical formLearned from2 sentences. A (train wreck) can be (railroad accident).Logical formLearned from2 sentences. A (wreck site) can be important.Logical formLearned from2 sentences.