Question: What is the name of the widow of Lee Harvey Oswald who used to live with Ruth Paine at the time of the JFK assassination? 

Context paragraphs:
Marina Oswald Porter: Marina Nikolayevna Oswald Porter (née Prusakova; Russian: Марина Николаевна Прусакова born on July 17, 1941) is the widow of Lee Harvey Oswald, the assassin of U.S. President John F. Kennedy.  She married Oswald during his temporary defection to the Soviet Union and immigrated to the United States with him.  She was not implicated in the assassination and remarried two years following Oswald's murder.

The Trial of Lee Harvey Oswald (1964 film): The Trial of Lee Harvey Oswald is a 1964 American film from Larry Buchanan.  It is the first speculative trial drama to be produced about Lee Harvey Oswald only a few months after the assassination of John F. Kennedy along with the assassination of Lee Harvey Oswald himself.  The film was made in Dallas, and served as an idea of what the trial would have been like had it occurred, if Oswald hadn't been killed by Jack Ruby.  In the film, the prosecution asserts Oswald committed the crime for political reasons due to his Marxist beliefs, while Oswald's attorney presents an insanity defense, claiming he suffered from untreated paranoid schizophrenia since adolescence.  Since the viewer acts as a juror, no verdict is given.

Michael Paine: Michael Ralph Paine (born June 25, 1928) is a retired engineer.  He became notable after the assassination of President John F. Kennedy, because he was an acquaintance of the President's purported assassin Lee Harvey Oswald.  His wife, Ruth Hyde Paine, housed Lee's estranged wife, Marina Oswald, in her home for several months before the assassination until the day after it.

John F. Kennedy assassination rifle: In March 1963, Lee Harvey Oswald, using the alias "A. Hidell," purchased by mail order a 6.5×52mm Carcano Model 91/38 infantry rifle (described by the President's Commission on the Assassination of President Kennedy as a "Mannlicher–Carcano" ) rifle with a telescopic sight.  He also purchased a revolver from a different company, by the same method.  The Hidell alias was determined from multiple sources to be Oswald.  It is officially accepted that the rifle was fired by Oswald from the Texas School Book Depository in Dallas, Texas, to assassinate United States President John F. Kennedy as his motorcade drove by on November 22, 1963.  Photographs of Oswald holding the rifle, a palmprint found upon examination of the rifle, and detective work tracing its sale, all eventually led to Oswald.  Marina Oswald later testified she was told by Lee that the rifle was also used before in an attempt to assassinate retired U.S. Army General Edwin Walker in Dallas.

Gerald Posner: Gerald Leo Posner (born May 20, 1954) is an American investigative journalist and author of twelve books, including "Case Closed: Lee Harvey Oswald and the Assassination of JFK" (1993), which explores the John F. Kennedy assassination, and "Killing the Dream: James Earl Ray and the Assassination of Martin Luther King, Jr." (1998), about the assassination of Martin Luther King, Jr. A plagiarism scandal involving his articles and books arose in 2010.  In 2015, the "Chicago Tribune" called Posner "a merciless pitbull of an investigator."

James P. Hosty: James Patrick Hosty Jr. (August 28, 1924 – June 10, 2011) was an American FBI agent assigned to investigate Lee Harvey Oswald upon Oswald's June 1962 return to the United States after his defection to the Soviet Union.  After Hosty made contact with Marina Oswald (a Soviet citizen) in order to interview her about her recent entry into the United States, Oswald wrote him a letter to protest the "harassment" of his wife Marina, and had Hosty's name and phone number in his address book.  After the Kennedy assassination, Hosty did not disclose Oswald's letter about Marina to the Warren Commission and destroyed it on his superior's order.  Because of this, Hosty attracted speculation as a possible conspirator in several conspiracy theories.  Hosty was transferred to the FBI's Kansas City office until his mandatory retirement in 1979.  Hosty later wrote a memoir about the Kennedy assassination, titled "Assignment: Oswald".

Ruth Paine: Ruth Hyde Paine (born September 3, 1932) was a friend of Marina Oswald, who was living with her at the time of the JFK assassination.  According to five government investigations, Lee Harvey Oswald stored the 6.5 mm caliber Carcano rifle that he used to assassinate U.S. President John F. Kennedy in Ruth Paine's garage, unbeknownst to her and her husband, Michael Paine.

Hugh Aynesworth: Hugh Grant Aynesworth (born August 2, 1931) is an American journalist, investigative reporter, author, and teacher.  Aynesworth has been reported to have witnessed the assassination of John F. Kennedy in Dealey Plaza, the capture and arrest of Lee Harvey Oswald at the Texas Theater, and the shooting of Lee Harvey Oswald by Jack Ruby in the basement of the Dallas Police Headquarters.  In a 1976 "Texas Monthly" article, William Broyles, Jr. described Aynesworth as "one of the most respected authorities on the assassination of John F. Kennedy".

Ruth Paine Home: The Ruth Paine Home at 2515 W. 5th Street in Irving, Texas, United States, is the location where Lee Harvey Oswald spent the night before assassinating President John F. Kennedy on November 22, 1963.  It was from the house's garage that he removed the rifle he used for the assassination, which he had previously concealed there.

Robert J. Groden: Robert J. Groden (born November 22, 1945) is an American author who has written extensively about conspiracy theories regarding the assassination of U.S. President John F. Kennedy.  His books include "The Killing of a President: The Complete Photographic Record of the JFK Assassination, the Conspiracy, and the Cover-up"; "The Search for Lee Harvey Oswald: A Comprehensive Photographic Record"; and "JFK: The Case for Conspiracy" (shorter version than his 1975 co-authored book).  Groden is a photo-optics technician who served as a photographic consultant for the House Select Committee on Assassinations.

Supporting paragraphs: Ruth Paine Marina Oswald Porter
Answer: Marina Nikolayevna Oswald Porter