Question: Who worked more behind the camera, Nora Ephron or Nadine Labaki?

Context paragraphs:
Mea Culpa (film): Mea Culpa is a 2014 French thriller film directed by Fred Cavayé, starring Vincent Lindon, Gilles Lellouche and Nadine Labaki.

My Blue Heaven (1990 film): My Blue Heaven is a 1990 American crime comedy film directed by Herbert Ross, written by Nora Ephron, and starring Steve Martin, Rick Moranis, and Joan Cusack.  This is the third film in which Martin and Moranis starred together.  It has been noted for its relationship to "Goodfellas", which was released one month later.  Both films are based upon the life of Henry Hill, although the character is renamed "Vincent 'Vinnie' Antonelli" in "My Blue Heaven".  "Goodfellas" was based upon the book "Wiseguy" by Nicholas Pileggi, while the screenplay for "My Blue Heaven" was written by Pileggi's wife Nora Ephron, and much of the research for both works was done in the same sessions with Hill.

Where Do We Go Now?: Where Do We Go Now?  (Arabic: وهلّأ لوين؟ "w halla' la wayn"‎ ‎ , French: "Et maintenant, on va où" ) is a 2011 film by Lebanese director Nadine Labaki.  The film premiered during the 2011 Cannes Film Festival as part of Un Certain Regard .  The film was selected to represent Lebanon for the 84th Academy Awards, but it did not make the final shortlist.  The film won the People's Choice Award at the 2011 Toronto International Film Festival.

Nadine Labaki: Nadine Labaki (Arabic: نادين لبكي‎ ‎ ; born February 18, 1974) is a Lebanese actress and director.

Caramel (film): Caramel (Arabic: سكر بنات "Sekkar banat"‎ ‎ ) is a 2007 Lebanese film — the first feature film by Lebanese director-actress Nadine Labaki.  The film premiered on May 20 at the 2007 Cannes Film Festival, in the Directors' Fortnight section.

Zuzanna Szadkowski: Zuzanna Szadkowski (born October 22, 1978) is a Polish-American actress, known for her role as Dorota Kishlovsky on the CW teen drama series "Gossip Girl".  Szadkowski also appeared on "The Sopranos", "", and "Guiding Light".  She made her New York Stage debut in Nora Ephron and Delia Ephron's "Love, Loss, and What I Wore" in which she appeared in a record-breaking five all-star casts.  Her surname pronouced as ""shad-kawv-skee"".

This Is My Life (1992 film): This Is My Life is a 1992 film that marked the directorial debut of screenwriter Nora Ephron.  The screenplay, written by Ephron and her sister, Delia Ephron, is based on the book, "This Is Your Life", by Meg Wolitzer.

Take Her, She's Mine: Take Her, She's Mine is a 1963 comedy film starring James Stewart and Sandra Dee based on the 1961 Broadway comedy written by Henry Ephron and Phoebe Ephron.  The film was directed by Henry Koster with a screenplay by Nunnally Johnson.  It also features an early film score by prolific composer Jerry Goldsmith.  The character of Mollie, played by Elizabeth Ashley on Broadway and in the film by Sandra Dee, was based on the then 22-year-old Nora Ephron.  Ashley's performance won her a Tony Award for Best Featured Actress in a Play and served as the launchpad for her career.

Nora Ephron: Nora Ephron ( ; May 19, 1941 – June 26, 2012) was an American writer and filmmaker.  She is best known for her romantic comedy films and was nominated three times for the Academy Award for Best Writing: for "Silkwood" (1983), "When Harry Met Sally..." (1989), and "Sleepless in Seattle" (1993).  She won a BAFTA Award for Best Original Screenplay for "When Harry Met Sally...".  She sometimes wrote with her sister Delia Ephron.  Her last film was "Julie & Julia."  She also co-authored the Drama Desk Award–winning theatrical production "Love, Loss, and What I Wore".  In 2013, Ephron received a posthumous Tony Award nomination for Best Play for "Lucky Guy".

You've Got Mail: You've Got Mail is a 1998 American romantic comedy-drama film directed by Nora Ephron, co-written by Nora and Delia Ephron, and starring Tom Hanks and Meg Ryan.  The film is about two people in an online romance who are unaware that they are also business rivals.  It marks the third coupling of stars Tom Hanks and Meg Ryan, who had previously appeared together in "Joe Versus the Volcano" (1990) and "Sleepless in Seattle" (1993).

Supporting paragraphs: Nora Ephron Nadine Labaki
Answer: Nora Ephron