A fuel can be efficient.Logical formLearned from44 sentences. A trading can be efficient.Logical formLearned from44 sentences. Public services can be efficient.Logical formLearned from44 sentences. An airline can be efficient.Logical formLearned from44 sentences. A trade can be efficient.Logical formLearned from44 sentences. An estimator can be efficient.Logical formLearned from43 sentences. An exploration can be efficient.Logical formLearned from43 sentences. Types can be efficient.Logical formLearned from43 sentences. A discovery can be efficient.Logical formLearned from43 sentences. A cure can be efficient.Logical formLearned from43 sentences. Aid can be efficient.Logical formLearned from43 sentences. Businesses can be efficient.Logical formLearned from43 sentences. An operator can be efficient.Logical formLearned from43 sentences. Computations can be efficient.Logical formLearned from43 sentences. Methods can be efficient.Logical formLearned from43 sentences.