Complex sentence: In addition to serving on the council as Mayor Pro Tem, Mayor-Elect Colvin serves as the chair of the Baseball Committee; which negotiated a deal to bring minor league baseball affiliate of the MLB Houston Astros to downtown Fayetteville.
Split into simpler sentences: In addition to serving on the council as Mayor Pro Tem, Mayor-Elect Colvin serves as the chair of the Baseball Committee. Which negotiated a deal to bring minor league baseball affiliate of the MLB Houston Astros to downtown Fayetteville.