(Telephone lines) may prevent kidnappers from reaching diplomats.Logical formLearned from10 sentences. Troops may prevent peacekeepers from withdrawing from an (observation post).Logical formLearned from10 sentences. Obstacles may prevent a solution.Logical formLearned from10 sentences. Persons may prevent a situation from deepenning into a crisis.Logical formLearned from10 sentences. A male may be prevented from leaving a country.Logical formLearned from10 sentences. A blockade may prevent some fisherman.Logical formLearned from10 sentences. Net neutrality may prevent isps from blocking.Logical formLearned from10 sentences. A death may prevent a male from appealing a verdict.Logical formLearned from10 sentences. A crisis may prevent an election of a president.Logical formLearned from10 sentences. A territorial dispute may prevent some countries from signing a (peace treaty).Logical formLearned from10 sentences. Rain may prevent a result.Logical formLearned from10 sentences. (Security forces) may prevent some percent of attacks.Logical formLearned from10 sentences. A threat of assured destruction may prevent nuclear war.Logical formLearned from10 sentences. A country may prevent a team from entering sites.Logical formLearned from10 sentences. Pressure may prevent an armed conflict.Logical formLearned from10 sentences.