Complex sentence: On January 2,2014, Ford registered to run for re-election, but after being hospitalized and diagnosed with an abdominal tumour in September 2014, Ford withdrew from the mayoral race and registered instead to run for his old seat on the City Council.
Split into simpler sentences: On January 2,2014, Ford registered to run for re-election. After being hospitalized and diagnosed with an abdominal tumour in September 2014, Ford withdrew from the mayoral race and registered instead to run for his old seat on the City Council.