An operation may involve some troops.Logical formLearned from39 sentences. A halt can be in military operations.Logical formLearned from39 sentences. Participation can be in peacekeeping operations.Logical formLearned from39 sentences. A military operation can be in history.Logical formLearned from39 sentences. Operations can be in countries.Logical formLearned from39 sentences. A (security operation) can be tight.Logical formLearned from39 sentences. (Refinancing operations) can be steady at some percent.Logical formLearned from39 sentences. A (rescue operation) may be launched.Logical formLearned from39 sentences. (Information systems) may undergo an operation.Logical formLearned from39 sentences. A view may show an operation.Logical formLearned from39 sentences. A sort may undergo operations.Logical formLearned from39 sentences. Operation may end.Logical formLearned from38 sentences. An operation may pertain-to an airport.Logical formLearned from38 sentences. A military-or-other-action-organization may launch an operation.Logical formLearned from38 sentences. (Air operations) may pertain-to persons.Logical formLearned from38 sentences.