Complex sentence: As James McCormack was involved in the construction and maintenance of racecourses--at Bellewstown Racecourse and later Baldoyle Racecourse, a 100-year commemorative plaque and modern bench were dedicated in his name at the Baldoyle Racecourse Community Garden in 2016.
Split into simpler sentences: As James McCormack was involved in the construction and maintenance of racecourses--at Bellewstown Racecourse and later Baldoyle Racecourse. A 100-year commemorative plaque and modern bench were dedicated in his name at the Baldoyle Racecourse Community Garden in 2016.