Complex sentence: Both works were exhibited at the London ICA in 1998 in the exhibition Made in Italy and in that occasion, London's THE GUARDIAN wrote a large article on Manetas calling him the El Greco of the Geeks.
Split into simpler sentences: Both works were exhibited at the London ICA in the exhibition Made in Italy. It was at that occasion, when London's THE GUARDIAN published an a article on Manetas calling him the El Greco of the Geeks.