Complex sentence: Mount San Jacinto College, a junior community college serves the Inland Empire region for over 40 years, and the ballpark is home to the semi-pro collegiate team, the Sou-Cal Tremors.
Split into simpler sentences: Mount San Jacinto College, a junior community college, has served the Inland Empire region for over forty years. The local ballpark is home to the semi-pro collegiate team, the Sou-Cal Tremors.