For example, recent FGD retrofit systems installed at Homer City (September 2001) and Centralia (July 2001) were both completed within approximately 24 months.
Homer City has installed retrofit systems.
mnli hypothesis: Homer City has installed retrofit systems. premise: For example, recent FGD retrofit systems installed at Homer City (September 2001) and Centralia (July 2001) were both completed within approximately 24 months.