Complex sentence: Polak's journalistic career consists of a long stint as nationally syndicated weekly celebrity interview columnist for Knight-Ridder and The Philadelphia Inquirer, where Polak did over a thousand columns.
Split into simpler sentences: Polak's journalistic career consists of a long stint as nationally syndicated weekly celebrity interview columnist for Knight-Ridder, writing roughly a thousand celebrity profiles. As a weekly interview columnist for the Philadelphia Inquirer Magazine, Polak did over a thousand columns.