Complex sentence: From 1903 to 1914 Van Wisselingh organized a yearly exhibition at the Pulchri Studio where the work of Akkeringa was regularly shown with, in April 1904, a joint exhibition of the works of Akkeringa and Jan Toorop.
Split into simpler sentences: From 1903 to 1914 Van Wisselingh organized a yearly exhibition at Pulchri Studio where work of Akkeringa was regularly shown. Also in April 1904, there was a joint exhibition of the work of Akkeringa and Jan Toorop.