Task: Explanation
Input (English): David Hackett Souter ( ; born September 17, 1939) is a retired Associate Justice of the Supreme Court of the United States. He served from October 1990 until his retirement in June 2009. Appointed by President George H. W. Bush to fill the seat vacated by William J. Brennan, Jr., Souter sat on both the Rehnquist and Roberts courts and came to vote reliably with the court's liberal members. Question: What is the name of the retired Supreme Court Justice that Carlos Moreno was a leading candidate to replace? Answer: David Souter
Output (English):  He served from October 1990 until his retirement in June 2009.