Complex sentence: Initiated in September 2014 for her senior thesis, the work involves Sulkowicz carrying a mattress wherever she goes on campus, to protest the university's response to her alleged rape, until the student she accuses is expelled or otherwise leaves the university.
Split into simpler sentences: Initiated in September 2014 for her senior thesis, the work involves Sulkowicz carrying a mattress wherever she goes on campus, to protest the university's response to her alleged rape. Sulkowicz says she will continue carrying the mattress until the student she accuses is expelled or otherwise leaves the university.