A US-president may believe in an efficacy of economics.Logical formLearned from2 sentences. Persons may differ on an efficacy of (transportation expenses).Logical formLearned from2 sentences. An efficacy can be at collecting debts.Logical formLearned from2 sentences. An (iron tax man) can be for an efficacy.Logical formLearned from2 sentences. An efficacy may pertain-to the internet.Logical formLearned from2 sentences. Persons may prove an efficacy of the internet.Logical formLearned from2 sentences. A reputation can be for efficacy.Logical formLearned from2 sentences. An efficacy can be rewarding.Logical formLearned from2 sentences. An efficacy may pertain-to a drink.Logical formLearned from2 sentences. An efficacy may pertain-to sprayings.Logical formLearned from2 sentences. Conclusions can be about an efficacy of (arthroscopic surgery).Logical formLearned from2 sentences. A pattern may be associated with an efficacy.Logical formLearned from2 sentences. (Gene therapy trials) may test efficacy.Logical formLearned from2 sentences. An efficacy can be a consideration.Logical formLearned from2 sentences. An efficacy may pertain-to a pillow.Logical formLearned from2 sentences.