A microchip may prevent overcharging.Logical formLearned from69 sentences. A death may be prevented.Logical formLearned from68 sentences. (Clamshell vents) may prevent condensation.Logical formLearned from68 sentences. A level may prevent interference.Logical formLearned from67 sentences. An injunction may prevent a senator from continuing a candidacy.Logical formLearned from67 sentences. Rain may prevent play.Logical formLearned from63 sentences. Injuries may be prevented.Logical formLearned from60 sentences. Rain may prevent a play.Logical formLearned from59 sentences. Time may prevent some comments from appearings.Logical formLearned from59 sentences. Persons may prevent attacks.Logical formLearned from55 sentences. Barriers may prevent persons from connecting.Logical formLearned from55 sentences. Attacks may be prevented.Logical formLearned from55 sentences. Damage may be prevented.Logical formLearned from52 sentences. A tragedy may be prevented.Logical formLearned from52 sentences. A bulk of mail may prevent replies to some letters.Logical formLearned from48 sentences.