Complex sentence: At Sherman Square, nicknamed Needle Park for the drug addicts who use it as a hangout to get drugs and get high, Bobby introduces Helen to various acquaintances, including his brother Hank, who burgles for a living.
Split into simpler sentences: At Sherman Square, nicknamed Needle Park for the drug addicts who use it as a hangout to get drugs and get high. At the park, Bobby introduces Helen to various acquaintances, including his brother Hank, who burgles for a living.