Question: To which actor, was the man who starred with Ben Kingsley and Sherry Baines in Testimony, regarded as the natural successor ?

Context paragraphs:
Cleaver (The Sopranos): Cleaver is a metafictional film within a TV-series that serves as an important plot element toward the end of the HBO television drama series "The Sopranos".  Although very little film material is actually shown in the series, its planning and development are discussed at large throughout multiple seasons of the show.  The extent to which Sopranos character Christopher Moltisanti mixes confidential and personal information about the Soprano mob family into the story elements of Cleaver is the focal point throughout its development.  After the project eventually materializes, Cleaver can be categorized as a direct-to-DVD mafia-slasher film, described alternately as ""Saw" meets "the Godfather II"", ""the Ring" meets "The Godfather"", and "a story about a young man who goes to pieces and then manages to pull himself together again".  Several characters are credited for their involvement in the project.  The screenplay was written by J. T. Dolan based on a story by Christopher Moltisanti, directed by Morgan Yam and produced by Carmine Lupertazzi, Jr. and Moltisanti.  The film starred Jonathan LaPaglia as Michael "the Cleaver" and Daniel Baldwin as mob boss Salvatore ("Sally Boy").  Also starring as Sally-boy's key advisors are George Pogatsia as Frankie and Lenny Ligotti as Nicky.  Moltisanti and Lupertazzi initially attempts to recruit Ben Kingsley to fill the role of the mafia don in "Luxury Lounge (6x07)," but Kingsley eventually turns down the part.

A Wednesday!: A Wednesday!  is a 2008 Indian thriller film written and directed by Neeraj Pandey.  It stars Naseeruddin Shah and Anupam Kher.  Set between 2 pm and 6 pm on a Wednesday, the film depicts an about-to-retire police commissioner (Anupam Kher) narrating a sequence of events that unfolded on a particular Wednesday.  There does not exist any written record.  The awareness of the incident exists only in his mind and in those of several individuals who were involved, willingly and unwillingly, and how those events affected the lives of all the concerned people.  It was the inspiration for Tamil movie "Unnaipol Oruvan" , Telugu movie "Eeenadu", with Kamal Hassan in the role played by Naseeruddin Shah in the original and Mohanlal and Daggubati Venkatesh playing the role acted by Anupam Kher in the original in Tamil and Telugu respectively and also Hollywood movie A Common Man (film).  Directed by Chandran Rutnam with actor Ben Kingsley portraying the role played by Nasseruddin Shah and Ben Cross portraying the role played by Anupam Kher.

Learning to Drive (film): Learning to Drive is a 2014 American comedy drama film.  Directed by Isabel Coixet and written by Sarah Kernochan based on a "New Yorker" article by Katha Pollitt, the film stars Patricia Clarkson as Wendy, a successful book editor taking driving lessons with instructor Darwan (Ben Kingsley) after the breakup of her marriage to Ted (Jake Weber) forces her to become more self-sufficient.  This is the second collaboration between Ben Kingsley, Patricia Clarkson, and Isabel Coixet.

All Hail the King: All Hail the King is a 2014 American direct-to-video short film featuring the Marvel Cinematic Universe (MCU) character Trevor Slattery, produced by Marvel Studios and distributed by Walt Disney Studios Home Entertainment on the home media release of "".  It is a follow up and spin-off of "Iron Man 3", and is the fifth film in the Marvel One-Shots short film series.  The film is written and directed by Drew Pearce, and is set in the Marvel Cinematic Universe, sharing continuity with the films of the franchise.  It stars Ben Kingsley, Scoot McNairy, Lester Speight, and Sam Rockwell, with Kingsley reprising his role from "Iron Man 3", and Rockwell reprising his role from "Iron Man 2".  In "All Hail the King", a documentary filmmaker interviews the infamous fake terrorist Trevor Slattery from behind bars.

Robert Stephens: Sir Robert Graham Stephens (14 July 193112 November 1995) was a leading English actor in the early years of Britain's Royal National Theatre.  He was one of the most respected actors of his generation and was at one time regarded as the natural successor to Laurence Olivier.

Action Congress of Nigeria: The Action Congress of Nigeria (ACN), formerly known as Action Congress (AC), was a Nigerian political party formed via the merger of the Alliance for Democracy, the Justice Party, the Advance Congress of Democrats, and several other minor political parties in September 2006.  The party controlled Lagos.  It was regarded as a natural successor to the progressive politics more closely associated with the Action Group and Unity Party of Nigeria (UPN) led by Chief Obafemi Awolowo in the First and Second Republics respectively.  However, criticism of the party's more pragmatic and less ideological political outlook associated with AG and UPN, has made many argue it was less of a worthy political heir.  The Party had strong presence in the South West (5 Governors, 15 Senators and 6 State Houses), Mid-West (1 Governor) and North Central Regions (3 Senators).  Lagos, Edo, Ekiti, Kogi, Ondo, Bauchi, Plateau, Niger, Adamawa, Oyo and Osun states by far accounts for majority of the party's presence and discernible power base.

Anne Frank: The Whole Story: Anne Frank: The Whole Story is a two-part mini-series based on the book "" by Melissa Müller.  The mini-series aired on ABC on May 20 and 21, 2001.  The series starred Ben Kingsley, Brenda Blethyn, Hannah Taylor-Gordon, and Lili Taylor.  Controversially, but in keeping with the claim made by Melissa Müller, the series asserts that the anonymous betrayer of the Frank family was the office cleaner, when in fact the betrayer's identity has never been established.  A disagreement between the producers of the mini-series and the Anne Frank Foundation about validity of this and other details led to the withdrawal of their endorsement of the dramatization, which prevented the use of any quotations from the writings of Anne Frank appearing within the production.  Hannah Taylor-Gordon received both Golden Globe and Emmy Award nominations for her performance as Anne Frank, while Ben Kingsley won a Screen Actors Guild Award for his performance as Otto Frank, Anne's father.  It is revealed in the miniseries that the cleaning lady of Opekta betrayed Anne and her family.

Trevor Slattery: Trevor Slattery is a character portrayed by Ben Kingsley in the films of the Marvel Cinematic Universe (MCU).  An actor hired to portray the legendary terrorist the Mandarin, he first appeared in the 2013 film "Iron Man 3".  General response to the character was mixed, with many comic fans criticizing the character and how his reveal affected the film's Mandarin portrayal, while others defended the twist as "brilliant" and "satisfying", noting its social commentary and how it avoided the racist caricature of the comics' Mandarin.  Kingsley reprised the role in "All Hail the King", a 2014 Marvel One-Shot short film also set in the MCU.

Iron Man 3: Iron Man 3 (stylized onscreen as Iron Man Three) is a 2013 American superhero film based on the Marvel Comics character Iron Man, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures.  It is the sequel to 2008's "Iron Man" and 2010's "Iron Man 2", and the seventh film in the Marvel Cinematic Universe.  Shane Black directed a screenplay he co-wrote with Drew Pearce, which uses concepts from the "Extremis" story arc by Warren Ellis.  The film stars Robert Downey Jr., Gwyneth Paltrow, Don Cheadle, Guy Pearce, Rebecca Hall, Stephanie Szostak, James Badge Dale, Jon Favreau, and Ben Kingsley.  In "Iron Man 3", Tony Stark deals with posttraumatic stress disorder caused by the events of "The Avengers", while investigating the reemergence of the Ten Rings, led by the mysterious Mandarin and comes into a conflict with an old enemy: Aldrich Killian.

Testimony (1988 film): Testimony: The Story of Shostakovich is a 1988 British musical drama film directed by Tony Palmer and starring Ben Kingsley, Sherry Baines and Robert Stephens.  The film is based on the memoirs of Dmitri Shostakovich (1906–1975) as dictated in the book "Testimony" (edited by Solomon Volkov, ISBN  ) and filmed in Panavision.  Some consider the book to be a fabrication.

Supporting paragraphs: Testimony (1988 film) Robert Stephens
Answer: Laurence Olivier.