Complex sentence: Shimoju (2003:37) At that time, blind persons had limited means to earn a living; but these included acupuncture, massage, and playing music on the koto or the shamisen.
Split into simpler sentences: Shimoju (2003:37) At that time, blind persons had limited means to earn a living. Careers open to them included acupuncture, massage, and playing music on the koto or the shamisen.