In this task, you are given a sentence in the Romanian language. Your job is to translate the Romanian sentence into the English language.

Example input: Un bărbat pune brânză mărunțită pe o pizza.
Example output: A man is spreading shreded cheese on a pizza.
Example explanation: In the given translation process, the tense of both sentences, quantitative measures, entity name, the polarity of the sentence remains the same.
Q: Poliția folosind spray cu ardei a arestat 12 persoane luni seara la un marș și la un miting de aproximativ 400 de activiști care protestau împotriva unui seminar de instruire anual al Unității de Informații pentru Aplicarea Legii.
A:
Police using pepper spray arrested 12 people Monday night at a march and rally by about 400 activists protesting an annual training seminar of the Law Enforcement Intelligence Unit.