A (drill field) can be vacant.Logical formLearned from18 sentences. An exercise can be a drill.Logical formLearned from18 sentences. Part may pertain-to drills.Logical formLearned from18 sentences. A drill may be conducted.Logical formLearned from18 sentences. A goal may pertain-to a drill.Logical formLearned from18 sentences. A drill can be a success.Logical formLearned from18 sentences. Drills may begin.Logical formLearned from18 sentences. A country may carry_out drill.Logical formLearned from18 sentences. A (drill bit) can be broken.Logical formLearned from18 sentences. Drills may take place.Logical formLearned from18 sentences. A (landing drill) can be amphibious.Logical formLearned from18 sentences. A round can be constituted-of-or-filled-with drills.Logical formLearned from18 sentences. A country may hold drills.Logical formLearned from17 sentences. A scenario may pertain-to a drill.Logical formLearned from17 sentences. A person may do drills.Logical formLearned from17 sentences.