A (buffer zone) may be aimed at preventing (rocket attacks).Logical formLearned from9 sentences. Persons may prevent a country from developping nuclear weapons.Logical formLearned from9 sentences. An (ankle injury) may prevent a male.Logical formLearned from9 sentences. An anti-secession law may be aimed at preventing an island.Logical formLearned from9 sentences. An anti-secession law may be aimed at preventing a country.Logical formLearned from9 sentences. A condition may prevent (opposition leader) from standing in elections.Logical formLearned from9 sentences. Journalists may be prevented from covering polls.Logical formLearned from9 sentences. A country may prevent allies from selling aircraft.Logical formLearned from8 sentences. A constitution may prevent (member states) from acting.Logical formLearned from8 sentences. A bill may prevent bailouts.Logical formLearned from8 sentences. Epidemics may be prevented.Logical formLearned from8 sentences. Events may be prevented.Logical formLearned from8 sentences. Condoms may prevent transmission of a virus.Logical formLearned from8 sentences. Diseases may be prevented by vaccination.Logical formLearned from8 sentences. Persons may prevent illness.Logical formLearned from8 sentences.