Ruhollah Khomeini was appointed Chief Public Prosecutor of the Special Court for the Clergy in 1987 by Fallahian and led the trial of Mehdi Hashemi .
In 1987 Ruhollah Khomeini was appointed by Fallahian as chief prosecutor of the Special Court for the Clergy and led the trial against Mehdi Hashemi .

Are these two sentences paraphrases of each other?
yes