Curves can be concentric.Logical formLearned from8 sentences. A parallel shift can be in a (yield curve).Logical formLearned from8 sentences. Curves can be in a figure.Logical formLearned from8 sentences. A curve may undergo a parameterization.Logical formLearned from8 sentences. Curves may be obtained.Logical formLearned from8 sentences. Some curves may be shown.Logical formLearned from8 sentences. A quadratic curve may be specified by controlpoints.Logical formLearned from8 sentences. Curves may be obtained.Logical formLearned from8 sentences. A tail may pertain-to a (demand curve).Logical formLearned from8 sentences. A government can be behind a curve.Logical formLearned from8 sentences. A bell-shaped curve can be symmetrical.Logical formLearned from8 sentences. A direction may pertain-to curves.Logical formLearned from8 sentences. Simple closed curves can be disjoint.Logical formLearned from8 sentences. Integral curves may pertain-to a (vector field).Logical formLearned from8 sentences. A curve may pertain-to a shell.Logical formLearned from8 sentences.