Complex sentence: During the summer, the Canadian Stage Company company puts on a selected Shakespearean play in the park's amphitheatre in an annual event called "Dream in High Park", popular with Torontonians.
Split into simpler sentences: During the summer, the Canadian Stage company puts on a selected Shakespearean play in the park's amphitheatre. This annual event, called "Dream in High Park", is popular with Torontonians.