1499
They said police and troops used water cannons from fire engines to subdue about 120 university students sitting in at the centre of the junction at about 3 a.m. before they moved in to round them up .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 None