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

Let me give you an example: Un bărbat pune brânză mărunțită pe o pizza.
The answer to this example can be: A man is spreading shreded cheese on a pizza.
Here is why: In the given translation process, the tense of both sentences, quantitative measures, entity name, the polarity of the sentence remains the same.

OK. solve this:
Un bărbat cântă în timp ce merge pe trotuar.
Answer:
A man is singing while walking down the sidewalk.