Complex sentence: Mark Gyrion, Daley's second cousin, was a superintendent of garages for the City's Water Management Department, and among his duties was deciding when City-owned trucks should be sold for scrap.
Split into simpler sentences: Mark Gyrion, Daley's second cousin, was a superintendent of garages for the City's Water Management Department. Among Gyrion's duties was deciding when City-owned trucks should be sold for scrap.