Given the following reasoning and answer, what was the question? To answer the above question, the relevant sentence is: Martyn Garrett-The Baby
 The answer: Martyn Garrett
The question Passage: John Mills-Puncher Roberts Richard Attenborough-Knocker White André Morell-Marshal Bryan Forbes-Professor Evans Michael Hordern-Captain Hugh Ernest Clark-Commander Geoffrey Digby Harry Locke-Chief Petty Officer Blades Michael Howard-Joe Lionel Jeffries-George Clifford Mollison-Sails Thorley Walters-Lieutenant Setley Duncan Lamont-Master-at-Arms Lisa Gastoni-Maria Cyril Raymond-PMO Harold Siddons-Whiskers D.A. Clarke-Smith-The Admiral Kenneth Griffith-Sub-Lieutenant John Le Mesurier-The Marshal's Aide Carlo Giustini-Carlo Vespucci Ferdy Mayne-Interpreter Vincent Barbi-Second Brother Gordon Jackson-Harry Vittorio Vittori-Third Brother Martyn Garrett-The Baby Barry Foster-Sailor at Dance Robert Ayres-American Captain

Question: Based on this passage, who played the baby in the baby and the battleship?