2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/176767In this paper two things are done. First it is shown how a four dimensional gauged Wess-Zumino-Witten term arises from the five dimensional Einstein-Hilbert plus Gauss-Bonnet lagrangian with a special choice of the coefficients. Second, the way in which the equations of motion of four-dimensional General Relativity arise is exhibited.9 pages, 1 figure. v2: Minor changes in section 1 and 2. Section 3, rewrittenHigh Energy Physics - TheoryAstrophysicsGeneral Relativity and Quantum Cosmologytext