Complex sentence: In television, O'Reilly's first appearance was in 2001 in the Canadian television series BeastMaster as a guest star in "Slayer's Return", the following year O'Reilly appeared in Young Lions during 2002 as Kimberly Oswald in the episode "Asylum Seekers".
Split into simpler sentences: In television, O'Reilly's first appearance was in 2001 in the Canadian television series "BeastMaster" as a guest star in "Slayer's Return". The following year O'Reilly appeared in "Young Lions" as Kimberly Oswald in the episode "Asylum Seekers".