Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: He returned to France to be an air navigation director until 1993 .
A:
He returned to France to be air navigation director of Direction de la navigation ae ́ rienne now called Direction des Services de la navigation ae ́ rienne until 1993 .