rtokens: The students ' union said second and third-year students were demanding four months of unpaid grants .
pos: JJ NN VBD JJR IN CD NNS IN DT NN .
tokens: Paramilitary police detained more than 120 students in the protest .
ltokens: " Angry students cut the telephone , water and electricity of the university offices before smashing the windows and breaking down the doors . "