Complex sentence: She also previously held the position from 1985 to 1989; from 1989 to 1991, she was co-anchor with Tom Gibney of local news on the network's Toronto affiliate CFTO.
Split into simpler sentences: She also previously held the position from 1985 to 1989. From 1989 to 1991, she was co-anchor with Tom Gibney of local news on the network's Toronto affiliate CFTO.