A curve can be sickle-shaped.Logical formLearned from4 sentences. Curves may undergo a generation.Logical formLearned from4 sentences. A curve can be derived.Logical formLearned from4 sentences. A magnitude may pertain-to curves.Logical formLearned from4 sentences. Lines can be with curves.Logical formLearned from4 sentences. A (learning curve) can be prolonged.Logical formLearned from4 sentences. Curves can be correlated.Logical formLearned from4 sentences. Curves may undergo an estimation.Logical formLearned from4 sentences. A (learning curve) can be vertical.Logical formLearned from4 sentences. A curve can be alive.Logical formLearned from4 sentences. A (mobility curve) can be universal.Logical formLearned from4 sentences. Curves may undergo a treatment.Logical formLearned from4 sentences. Points can be on curves.Logical formLearned from4 sentences. An area can be between a (demand curve).Logical formLearned from4 sentences. A (bell curve) can be skewed.Logical formLearned from4 sentences.