Question: In the film, "Improper Channels," what was the birthdate of the woman that starred alongside Alan Arkin?

Context paragraphs:
Suzanne Shepherd: Suzanne Shepherd is an American actress and theater director.  She is best known for her portrayal of Karen's overbearing mother in the film "Goodfellas", Carmela Soprano's mother Mary De Angelis in the HBO television series "The Sopranos", and the assistant school principal in "Uncle Buck".  She also played the role of Mrs. Scarlini in the film 2000 film "Requiem for a Dream", and Big Ethel in "A Dirty Shame".  Shepherd studied acting with Sanford Meisner, and later went on to teach Meisner's program of acting study, the first woman to do so.  She was a founding member of the Compass Players in the early 1960s, along with such other actors as Alan Alda and Alan Arkin.  In 2016, she played the role of Lucille Abetemarco the mother of Detective Anthony Abetemarco played by former "Sopranos" co-star Steve Schirripa in "Good Cop Bad Cop" the 2nd episode of the 7th season of the CBS police procedural drama "Blue Bloods".  Her daughter is artist Kate Shepherd.

Chu Chu and the Philly Flash: Chu Chu and the Philly Flash is a 1981 comedy film starring Alan Arkin, Carol Burnett, Jack Warden, Ruth Buzzi, Adam Arkin and Danny Aiello.  It was released in 1981 by 20th Century Fox.  Arkin plays a down-on-his-luck former baseball player and Burnett plays a Carmen Miranda-style performer.  The film had received negative reviews from critics and was a box office bomb.  The film was directed by David Lowell Rich.

Freebie and the Bean: Freebie and the Bean is a 1974 American action-comedy film about two off-beat police detectives who wreak havoc in San Francisco attempting to bring down a local organized crime boss.  The picture, a precursor to the buddy cop film genre popularized a decade later, stars James Caan, Alan Arkin, Loretta Swit and Valerie Harper.  Harper was nominated for the Golden Globe for New Star of the Year for playing the Hispanic wife of Alan Arkin.  The film was directed by Richard Rush.  An article in Rolling Stone magazine alleged that Stanley Kubrick called "Freebie and the Bean" the best film of 1974.  Arkin and Caan would not appear in another movie together until the 2008 film adaptation of "Get Smart".

Improper Channels: Improper Channels is a 1981 comedy-drama film starring Alan Arkin and Mariette Hartley, both of whom were nominated for Genie Awards for their performances.  Arkin plays an architect named Jeff Martley who is erroneously accused of child abuse by an overzealous social worker (Monica Parker).  Hartley plays Martley's estranged wife.  The film was released in the United States in 1981.

The Baby Sitters (folk group): The Baby Sitters was a music group that recorded four albums of children's folk songs from 1958 until 1968.  Its original members were Alan Arkin, his then-wife Jeremy Arkin, Lee Hays, and Doris Kaplan.  Jeremy Arkin was later replaced by Barbara Dana.

David I. Arkin: David I. Arkin (December 19, 1906 – October 8, 1980) was an American teacher, painter, writer, and lyricist, and is the father of actor Alan Arkin.

Back to Basics (Alan Hull album): Back to Basics is a 1994 live album recording by Alan Hull.  It was recorded at the Mean Fiddler and Blackheath Halls in London during January 1994.  Playing alongside Alan is Kenny Craddock.

Paul Masefield: Masefield started his career in the youth ranks alongside Alan Shearer at Southampton.  However, he signed his first professional contract with Birmingham City and in spite of being with the club for four years (including a year with the first team), he never made a first team appearance.  After brief spells with Cheltenham Town and Exeter City (on a non-contract basis), he then moved to Stockport County and Doncaster Rovers, for whom he played seven and nine matches respectively.  He then played six games for Preston North End alongside future Everton manager David Moyes.  He had brief spells at Bromsgrove Rovers and Limerick, with whom he was player-coach between September and November 1994.

Mariette Hartley: Mary Loretta "Mariette" Hartley (born June 21, 1940) is an American character actress.

Anna Lee Carroll: Anna Lee "Boots" Carroll (October 7, 1930 – April 30, 2017) was an American actress, based in Alabama, whose career included dozens of theaters productions, as well as several movies and television shows.  Carroll was best known for her portrayal of Nurse Bradford in the 1968 film, "The Heart Is a Lonely Hunter", alongside Alan Arkin.  Arkin plays a deaf-mute in the film, while Carroll's Nurse Bradford provides the dialogue for his character in their mutual scenes.  Ann Lee Carroll's additional film roles included "Not of This Earth" in 1957 and "Marlowe" in 1969.

Supporting paragraphs: Improper Channels Mariette Hartley
Answer: June 21, 1940