A curve can be concave.Logical formLearned from38 sentences. Curves can be delicate.Logical formLearned from38 sentences. A curve can be subtle.Logical formLearned from38 sentences. A (learning curve) can be short.Logical formLearned from38 sentences. A curve can be pronounced.Logical formLearned from37 sentences. A curve may pertain-to a river.Logical formLearned from37 sentences. A (yield curve) may be inverted.Logical formLearned from37 sentences. A curve can be a curve.Logical formLearned from37 sentences. A (learning curve) may pertain-to persons.Logical formLearned from37 sentences. A curve may pertain-to shoulders.Logical formLearned from37 sentences. A center may pertain-to a curve.Logical formLearned from37 sentences. Part may pertain-to a (learning curve).Logical formLearned from37 sentences. Curves can be female.Logical formLearned from37 sentences. A (yield curve) can be flat.Logical formLearned from37 sentences. Curves may pertain-to lips.Logical formLearned from37 sentences.