_:n58b246d2960149a8bc428e967422bb43xb1
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://pl.khanacademy.org/math/math3/x5549cc1686316ba5:rationals/x5549cc1686316ba5:rational-graphs/e/graphs-of-rational-functions>