Circumstances of a nature may prevent a male from taking service.Logical formLearned from7 sentences. A country may prevent an attempt.Logical formLearned from7 sentences. Persons can be committed to preventing problems.Logical formLearned from7 sentences. Treatment may prevent infection.Logical formLearned from7 sentences. Condoms may prevent millions of deaths.Logical formLearned from7 sentences. Persons may prevent terrorists from comming from a country.Logical formLearned from7 sentences. A vaccine may prevent cases of cervical cancer.Logical formLearned from7 sentences. Turmoil may prevent a study of treasures.Logical formLearned from7 sentences. Safety may prevent catastrophes.Logical formLearned from7 sentences. A city may be prevented from using a slaughterhouse.Logical formLearned from7 sentences. (Ventilation systems) may prevent a spread of agents.Logical formLearned from7 sentences. Mammograms may prevent (breast cancer deaths).Logical formLearned from7 sentences. Screening may prevent (breast cancer deaths).Logical formLearned from7 sentences. Antibacterial soaps can be in preventing cutaneous anthrax.Logical formLearned from7 sentences. Relation can be to preventing exposure to a bacterium.Logical formLearned from7 sentences.