A (winter wheat crop) may be protected by a (snow cover).Logical formLearned from4 sentences. Persons may protect themselves from cancer.Logical formLearned from4 sentences. Cigarettes may protect against some diseases.Logical formLearned from4 sentences. A person may protect valuables.Logical formLearned from4 sentences. A quarter of an area may be protected.Logical formLearned from4 sentences. A person may protect him-or-herself from a threat of loss.Logical formLearned from4 sentences. Rules may protect persons.Logical formLearned from4 sentences. Measures may protect noncombatants.Logical formLearned from4 sentences. A law may protect gays from (job discrimination).Logical formLearned from4 sentences. A male may protect (drug traffickers).Logical formLearned from4 sentences. A guerrilla may be protected.Logical formLearned from4 sentences. A national reserve of (forest land) may protect a Spanish ibex.Logical formLearned from4 sentences. Villages may be protected by heights.Logical formLearned from4 sentences. Software may protect e-mail.Logical formLearned from4 sentences. Decisions may protect constitutional rights of a half century.Logical formLearned from4 sentences.