Radio Galaxy Zoo: discovery of a poor cluster through a giant wide-angle tail radio galaxy by Banfield, J, Andernach, H, Kapińska, A, Rudnick, L, Hardcastle, M, Cotter, G, Vaughan, S, Jones, T, Heywood, I, Wing, J, Wong, O, Matorny, T, Terentev, I, López-Sánchez, Á, Norris, R, Seymour, N, Shabala, S, Willett, K