Complex sentence: His given name, Gō, is a Japanese homophone for the number 5 (the number on his race car) which is also represented by the yellow letter G embroidered on his short-sleeve blue shirt.
Split into simpler sentences: His given name, Gō, is also a Japanese homophone for the number 5 (the number on his race car). This is also represented by the yellow letter G embroidered on his short-sleeve blue shirt.