Complex sentence: In 1503-5 he was apprenticed to Francesco Bianchi Ferrara in Modena, where he probably became familiar with the classicism of artists like Lorenzo Costa and Francesco Francia, evidence of which can be found in his first works.
Split into simpler sentences: In 1503-5 he was apprenticed to Francesco Bianchi Ferrara of Modena. Here he probably knew the classicism of artists like Lorenzo Costa and Francesco Francia, evidence of which can be found in his first works.