Question: Powder Room is a film that stars an actress of what nationality?

Context paragraphs:
Alvin S. Keys House: The Alvin S. Keys House is a historic house located at 1600 Illini Road in Leland Grove, Illinois.  The house was built in 1929-30 for Republican politician and community leader Alvin S. Keys.  At the time, Leland Grove was one of the most exclusive of Springfield's developing suburbs; the Keys House had an especially desirable location, as it was across the street from the Illini Country Club.  Architect Murray S. Hanes designed the house in the Colonial Revival style, one of the most popular styles in America at the time.  The front facade features a projecting entrance with a decorative fanlight and side lights; the rest of the facade is fairly plain, so as not to detract from the entrance.  The interior incorporates Colonial woodwork and features into a modern floor plan, which included a powder room for guests, a recreation room, a screened porch, and an attached garage.

Ferry Tales: Ferry Tales is a 2003 American short documentary film written, produced and directed by Katja Esson.  It follows the conversations of women in the powder room of the Staten Island Ferry during the morning commute from Staten Island to Manhattan.  It was nominated for the Academy Award for Documentary Short Subject

Silver Powder: Silver Powder (Russian: Серебристая пыль , "Serebristaya pyl " ) is a 1953 Soviet science fiction drama film directed by Pavel Armand and Abram Room and starring Mikhail Bolduman, Sofiya Pilyavskaya and Valentina Ushakova.

Polar metal: A polar metal, metallic ferroeletric, or ferroelectric metal is a metal that contains an electric dipole moment.  Its components have an ordered electric dipole.  Such metals should be unexpected, because the charge should conduct by way of the free electrons in the metal and neutralize the polarized charge.  However they do exist.  One substance family that can produce a polar metal is the nickelate perovskites.  One example is lanthanum nickelate, LaNiO.  A thin film of LaNiO grown on the (111) crystal face of lanthanum aluminate, (LaAlO) was interpreted to be both conductor and a polar material at room temperature.  Also, when grown 3 or 4 unit cells thick (1-2 nm) on the (100) crystal face of LaAlO, the LaNiO can be a polar insulator or polar metal depending on the atomic termination of the surface.  Lithium osmate, LiOsO also undergoes a ferrorelectric transition when it is cooled below 140K.  The point group changes from "R3 c" to "R3c" losing its centrosymmetry.  At room temperature and below lithium osmate is an electric conductor, in single crystal, polycrystalline or powder forms, and the ferroelectric form only appears below 140K.  Above 140K the material behaves like a normal metal.

Music for The Third Policeman: Music for The Third Policeman is an album by the composer and musician Django Bates and the Powder Room Collapse Orchestra.  It was released by Ah Um records in 1990.  The album is based on the 1939 comic novel "The Third Policeman", written by the Irish author Flann O'Brien.

Powder Room (film): Powder Room is a 2013 British comedy film directed by MJ Delaney and written by Rachel Hirons.  It is based on the stage play "When Women Wee" scripted by Hirons, devised by Natasha Sparkes, Stephanie Jay, Emily Wallis, Amirah Garba, Amy Revelle, Stef O'Driscoll, and Jennifer Davies.  The film stars Sheridan Smith, Jaime Winstone, Kate Nash, and Oona Castilla Chaplin.

George Arthur Bloom: George Arthur Bloom (born 1945) is an American born Canadian screenwriter and producer known for his work on Nelvana television titles such as "The Magic School Bus" and "Cyberchase".  He also wrote the pilots for "The Transformers" and "My Little Pony", as well as a number of installments of the "My Little Pony" series such as "My Little Pony 'n Friends" and "My Little Pony Tales".  In 1980, he was a scriptwriter for Disney's "The Last Flight of Noah's Ark" and has written several scripts, produced and story edited for various television shows and films for children and adults alike such as "Welcome Back, Kotter", "Working Stiffs", "Sanford Arms", the American version of the British sitcom "Love Thy Neighbor", "Bucky O'Hare and the Toad Wars", "Street Sharks", most of the "Tugs" segments for "Salty's Lighthouse", "Stockard Channing in Just Friends", "The Billy Crystal Comedy Hour", "", "A Knife for the Ladies", several sketches of "Cher", "CBS Library", "Starsky and Hutch", "Chico and the Man", "Alice", "Jem and the Holograms", "Conan the Adventurer", "Romance Theatre", "Throb", "All in the Family", "The New Dick Van Dyke Show", three of the "Shades of Love" films, "Solid Gold", "The Dean Martin Show", "Carter Country", "The Incredible Hulk", "Nature Cat", "The Julie Andrews Hour", "The Charmkins", "Too Close for Comfort", "Party Games for Adults Only", "Love, Sidney", "The Powder Room", "Nine to Five", "Potato Head Kids" and "The Glo Friends".  Bloom wrote two of GoodTimes Home Video's 1994 animated films "" and "Cinderella" and as well as "Alice in Wonderland" in 1995.

Fonthill (house): Fonthill, also known as Fonthill Castle, was the home of the American archeologist and tile maker Henry Chapman Mercer, in Doylestown, Pennsylvania.  Built between 1908 and 1912, it is an early example of poured-in-place concrete and features 44 rooms, over 200 windows, 18 fireplaces, 10 bathrooms and one powder room.  The home was individually listed on the National Register of Historic Places in 1972.

Sheridan Smith: Sheridan Smith, OBE (born 25 June 1981) is an English actress, singer and dancer.

Poly(hydridocarbyne): Poly(hydridocarbyne) (PHC) is one of a class of carbon-based random network polymers primarily composed of tetrahedrally hybridized carbon atoms, each having one hydride substituent, exhibiting the generic formula [HC]n. PHC is made from bromoform, a liquid halocarbon that is commercially manufactured from methane.  At room temperature, poly(hydridocarbyne) is a dark brown powder.  It can be easily dissolved in a number of solvents (tetrahydrofuran, ether, toluene etc.), forming a colloidal suspension that is clear and non-viscous, which may then be deposited as a film or coating on various substrates.  Upon thermolysis in argon at atmospheric pressure and temperatures of 110 °C to 1000 °C, decomposition of poly(hydridocarbyne) results in hexagonal diamond (Lonsdaleite).

Supporting paragraphs: Powder Room (film) Sheridan Smith
Answer: English