Vaccine may have efficacy.Logical formLearned from7 sentences. An efficacy may pertain-to laws.Logical formLearned from7 sentences. A science may regard (condom efficacy).Logical formLearned from7 sentences. An efficacy may pertain-to a (treatment modality).Logical formLearned from6 sentences. Evidence may support an efficacy.Logical formLearned from6 sentences. Efficacy may undergo a test.Logical formLearned from6 sentences. An efficacy can be established.Logical formLearned from6 sentences. An efficacy may pertain-to a filter.Logical formLearned from6 sentences. Claims can be for an efficacy.Logical formLearned from6 sentences. Efficacy may pertain-to agents.Logical formLearned from6 sentences. An efficacy may pertain-to a design.Logical formLearned from6 sentences. A drug may have efficacy.Logical formLearned from6 sentences. An efficacy may pertain-to a study.Logical formLearned from6 sentences. An efficacy may be tested.Logical formLearned from6 sentences. An efficacy may pertain-to rules.Logical formLearned from6 sentences.