Sentence:  The Guangzhou Daily reported that Shi Chunlong, 20, who organised the incident, was sentenced to 15 years in prison. Hou Bin, who pulled out of the attack after helping to plan it, will <WSD>serve</WSD> 12 years. 
Meaning of the word marked with <WSD> tags:  To work through (a given period of time in prison, a sentence). (from 19thc.)