Question: Who is Claudio Ranieri in reference 1996–97 A.C. Fiorentina season?

Context paragraphs:
2002–03 Chelsea F.C. season: The 2002–03 season was Chelsea F.C.'s 89th competitive season, 11th consecutive season in the Premier League and 97th year as a club.  Managed by Claudio Ranieri, the club did not manage to win any silverware.

1968–69 Serie A: The 1968–69 Serie A season was won by A.C. Fiorentina.

Claudio Ranieri: Claudio Ranieri (] ; born 20 October 1951) is an Italian football manager and former player.  He is currently the head coach of Nantes.

1988–89 A.C. Fiorentina season: A.C. Fiorentina finished in the midfield of Serie A, beating Roma 1-0 in a playoff match due to a goal by ex-Roma player Roberto Pruzzo.  The season also marked the international breakthrough of Roberto Baggio, the striker scoring 15 league goals, also setting up several of Stefano Borgonovo's 14.

1998–99 Valencia CF season: Valencia CF had a successful season, finishing in the top four of La Liga and thus qualifying for the UEFA Champions League for the first time in almost 30 years, thanks to the extension of the competition to include more teams from the top leagues.  Valencia also won the Copa del Rey, ending a long trophy drought and marking a successful end to Italian coach Claudio Ranieri's first spell at the club.  Among the main players behind the success included Gaizka Mendieta, Javier Farinós and lethal striker Claudio López.

1996–97 A.C. Fiorentina season: Associazione Calcio Fiorentina did not manage to repeat its spectacular 1995–96 season, and did not win any trophies the following year.  A relatively meagre goalscoring season from superstar Gabriel Batistuta was one of the reasons for the declining performance, which head coach Claudio Ranieri sacked at the end of the season.  The highlight of Fiorentina's season was reaching the semi-finals of the Cup Winners' Cup, where it lost to Barcelona 2–0 at the Camp Nou, following a 1–1 draw in Florence.

2002–03 Florentia Viola season: Florentia Viola was the newly founded club that replaced bankrupt "A.C. Fiorentina" in the Italian domestic league system.  Playing at Stadio Artemio Franchi in Florence, Florentia retained the support Fiorentina had had, and set Serie C2 spectator records due to the interest from fans accustomed to see Gabriel Batistuta, Rui Costa and a team challenging Italy's top clubs.

P.G. Libertas: Palestra Ginnastica Libertas, also known as P.G. Libertas, was an Italian association football club from Florence founded in 1912.  The club is short-lived, lasting little more than a decade before merging with fellow Florence club C.S. Firenze in 1926 to form A.C. Fiorentina, which would be one of Serie A's most dominant forces to this day.

Danilo Stefani: Danilo Stefani (born 19 January 1979) is an Italian footballer who played as a midfielder.  After playing two matches with A.C. Fiorentina in Serie A he continued his career with various teams in Serie C2 and from 2007 played in Serie D, Eccellenza and Promozione, the divisions of amateur (and semi-pro) Lega Nazionale Dilettanti of Italy.

1987–88 A.C. Fiorentina season: A.C. Fiorentina had its first season under Swedish coach Sven-Göran Eriksson, posting a stable mid-table season.  Eriksson's compatriot Glenn Hysén arrived from UEFA Cup champions IFK Göteborg, the centre half becoming a crucial player for La Viola.  Starlet Roberto Baggio finally got his breakthrough, scoring six league goals.

Supporting paragraphs: 1996–97 A.C. Fiorentina season Claudio Ranieri
Answer: head coach