A ship may return to port.Logical formLearned from51 sentences. A ship may be attacked by pirates.Logical formLearned from51 sentences. (Order ships) may pertain-to a person.Logical formLearned from51 sentences. A (ship channel) may pertain-to a US-city.Logical formLearned from51 sentences. Persons may have some ships.Logical formLearned from51 sentences. A course may pertain-to a ship.Logical formLearned from51 sentences. An attack can be on a ship.Logical formLearned from51 sentences. Ships can be in a night.Logical formLearned from51 sentences. Ships may enter ports.Logical formLearned from51 sentences. A band may pertain-to a ship.Logical formLearned from51 sentences. A direction may pertain-to a ship.Logical formLearned from51 sentences. A propeller may pertain-to a ship.Logical formLearned from51 sentences. Capabilities may pertain-to a ship.Logical formLearned from51 sentences. Ships may undergo a boarding.Logical formLearned from51 sentences. A ship may be owned by a company.Logical formLearned from51 sentences.