Australian forces may include a frigate.Logical formLearned from2 sentences. Some (navy frigates) may sail.Logical formLearned from2 sentences. A frigate may be headed.Logical formLearned from2 sentences. A frigate may be anchored off an island.Logical formLearned from2 sentences. A (frigate and helicopter) may come to aid.Logical formLearned from2 sentences. A rescue may involve frigates.Logical formLearned from2 sentences. A frigate may throw a line.Logical formLearned from2 sentences. A country may hand_over a frigate.Logical formLearned from2 sentences. A president may send a message to a company of a frigate.Logical formLearned from2 sentences. A company may pertain-to a frigate.Logical formLearned from2 sentences. A frigate may move.Logical formLearned from2 sentences. A frigate may be equipped with radars.Logical formLearned from2 sentences. A visit can be by a frigate.Logical formLearned from2 sentences. A frigate may come into port.Logical formLearned from2 sentences. Electronic systems can be for (guided missile frigates).Logical formLearned from2 sentences.