A frigate may conduct operations.Logical formLearned from4 sentences. A frigate may patroll waters.Logical formLearned from4 sentences. A frigate may remain on standby.Logical formLearned from4 sentences. A frigate may carry some helicopters.Logical formLearned from4 sentences. Payments may be made on a sale of some frigates to a country.Logical formLearned from4 sentences. A frigate may be headed to an area.Logical formLearned from4 sentences. A lieutenant may say from a frigate.Logical formLearned from4 sentences. A frigate may escort some ships off a coast of somalia.Logical formLearned from4 sentences. A frigate may carry marines.Logical formLearned from4 sentences. Frigates may pertain-to an international-political-entity.Logical formLearned from4 sentences. A frigate can be on (hurricane relief duty).Logical formLearned from4 sentences. A country may send a frigate to a region.Logical formLearned from4 sentences. A country may send a frigate to a site of a hijacking.Logical formLearned from4 sentences. A frigate may conduct a (surveillance mission).Logical formLearned from4 sentences. A frigate can be part of an unit.Logical formLearned from4 sentences.