Complex sentence: At long last in 2013 SC Cambuur secured the championship of the Eerste Divisie and returned to the Eredivisie after 13 years of absence, which also meant that the derby between SC Cambuur and SC Heerenveen was restored.
Split into simpler sentences: At long last in 2013 SC Cambuur secured the championship of the Eerste Divisie and returned back to the Eredivisie after 13 years of absence. Which also meant that the derby between SC Cambuur and SC Heerenveen was restored.