Complex sentence: Around the same time, Wilhelmina's health started failing her, forcing her to cede her monarchial duties to Juliana temporarily towards the end of 1947 (14 October through 1 December).
Split into simpler sentences: Around the same time, Wilhelmina's health started failing her. Bad health caused her to cede her monarchial duties to her daughter Juliana temporarily towards the end of 1947 (14 October through 1 December).