Question: Who was the mother of the performer of 'Til Tomorrow?

full_context: Document 1: Miami: The northern side of Miami includes Midtown, a district with a great mix of diversity with many West Indians, Hispanics, European Americans, bohemians, and artists. Edgewater, and Wynwood, are neighborhoods of Midtown and are made up mostly of high-rise residential towers and are home to the Adrienne Arsht Center for the Performing Arts. The wealthier residents usually live in the northeastern part, in Midtown, the Design District, and the Upper East Side, with many sought after 1920s homes and home of the MiMo Historic District, a style of architecture originated in Miami in the 1950s. The northern side of Miami also has notable African American and Caribbean immigrant communities such as Little Haiti, Overtown (home of the Lyric Theater), and Liberty City.
Document 2: Not till Tomorrow: Not till Tomorrow is the 1972 album by British Folk musician Ralph McTell. Produced by Tony Visconti, it was McTell's fifth album to be released (aside from the remixed compilation "Revisited") – and first album to chart – in the UK; and his third album to be released in the U.S. Ralph had been phoned and asked if he had decided on a title for the album and, wishing to give himself another day to come up with a title, responded "Not till tomorrow" which was misunderstood to be the name he had given to the album. By the time the mistake was found it was too late.
Document 3: Motown Remembers Marvin Gaye: Never Before Released Masters: Motown Remembers Marvin Gaye: Never Before Released Masters is a posthumous compilation album featuring the singer's unreleased recordings dating from 1963 to 1972 when Gaye was recording with Motown Records. Many of the records featured are overdubbed with eighties-styled drum programming and featured background vocalists whereas original recordings of the songs feature no background vocals and the instrumentation was more live than what is featured in this collection which was produced within a year after Gaye's 1984 death.
Document 4: Come Get to This: "Come Get to This" is a song written and recorded by American recording artist Marvin Gaye. It was released as the second single off Gaye's album, "Let's Get It On" following the success of the title track. Recording sessions for the song first occurred in 1970 when Gaye worked on the song in a demo format while he made "What's Going On".
Document 5: Star Apartments: The Star Apartments are a purpose-built residential housing complex on Los Angeles' Skid Row that caters to the needs of the long-term homeless. Opened in October 2014, the Star Apartments include 102 units averaging 350 square feet, alongside amenities such as on-site medical services, counseling, fitness and art facilities and a community garden. The complex was developed by the Skid Row Housing Trust, and designed by Los Angeles based firm Michael Maltzan Architecture. The building also houses the Los Angeles County Department for Health Services' Housing for Health division.
Document 6: Too Busy Thinking About My Baby: Three years later, Motown artist Marvin Gaye recorded a cover version of "Too Busy Thinking About My Baby" as a follow-up single to his 1968 hit "I Heard It Through the Grapevine", another Whitfield/Strong composition, which was a trans-atlantic top five hit. Whitfield produced Gaye's version as well, which featured background vocals by The Andantes. The song's lyrics feature the male narrator discussing how he has "no time to discuss weather" or "think about what money can buy", because when he thinks about his woman, "I ain't got time for nothing else".
Document 7: Sanford and Son: "Sanford and Son" stars Redd Foxx as Fred G. Sanford, a widower and junk dealer living at 9114 South Central Avenue in the Watts neighborhood of Los Angeles, California, and Demond Wilson as his son Lamont Sanford. In his youth, Fred moved to South Central Los Angeles from his hometown of St. Louis.
Document 8: Love Party: "Love Party" is a 1980 song recorded by singer Marvin Gaye, issued on his 1981 album, "In Our Lifetime". The song brought back the religious-themed atmosphere of the previous song, "Praise" in which Marvin mentions about the chapter of Revelations in the Bible and mentions how prayer and meditation can cleanse one's spirit leaving one "extra special mellow". In the song, Marvin confesses to a woman about how there should be a peaceful, serene love rather than "sinning". The song is given a funky musical vibe similar to the Mighty Clouds of Joy single, "Mighty High". The song originally was recorded as "Dance 'N' Be Happy" with different lyrics.
Document 9: Marvin Gaye: Gaye was born Marvin Pentz Gay Jr. on April 2, 1939, at Freedman's Hospital in Washington, D.C., to church minister Marvin Gay Sr., and domestic worker Alberta Gay (née Cooper). His first home was in a public housing project, the Fairfax Apartments (now demolished) at 1617 1st Street SW in the Southwest Waterfront neighborhood. Although one of the city's oldest neighborhoods, with many elegant Federal-style homes, Southwest was primarily a vast slum. Most buildings were small, in extensive disrepair, and lacked both electricity and running water. The alleys were full of one- and two-story shacks, and nearly every dwelling was overcrowded. Gaye and his friends nicknamed the area "Simple City", owing to its being "half-city, half country".
Document 10: 'Til Tomorrow: "'Til Tomorrow" is a 1982 R&B/soul quiet storm-styled song recorded by American singer Marvin Gaye. The song was the second song to be promoted off "Midnight Love" but wasn't released as a physical single, but more of a promotional song as Gaye prepped for a U.S. tour in the year of its release. The single was released on February 8, 1983.
Document 11: Algiers Motel incident: The Algiers Motel at 8301 Woodward Avenue near the Virginia Park district of Detroit was a black - owned business, owned by Sam Gant and McUrant Pye. It was one of three motels in Detroit owned by Gant and Pye, the others being the Alamo, at Alfred and Woodward, and the Rio Grande, on West Grand near Grand River. Prior to Gant and Pye's purchase in 1965, the motel's white owner had barred black people from staying at the motel. The Algiers was known to police as a center of drugs and prostitution and was raided regularly by the vice squad. It was located close to the then - headquarters of General Motors (GM) and executives of the firm were regular customers. To the rear of the motel, a three - story detached home, known as the Manor House or Annex, was also rented to clients. Its street address was 50 Virginia Park Street, and it was accessible from Virginia Park and through a driveway from Woodward. The motel itself was laid out in the shape of a ``U '', with its office, pool and cabana rooms to the left and a two - story wing of rooms to the right around its parking lot. The Manor House could be seen from Woodward Avenue.
Document 12: West Virginia Colored Children's Home: West Virginia Colored Children's Home, also known as the West Virginia Home for Aged and Infirm Colored Men and Women and University Heights Apartments, was a historic school, orphanage, and sanatorium building located near Huntington, Cabell County, West Virginia. It was built in 1922-1923, and was a three-story red brick building in the Classical Revival style. It was founded as the West Virginia Normal and Industrial School for Colored Children in Bluefield, West Virginia. This facility was the last of a series of buildings that were constructed to hold the state's first social institution exclusively serving the needs of African American residents. The West Virginia Colored Children's Home was closed in 1956 and the building was used as a rest home. The property transferred to Marshall University in 1961 and later it was converted to apartments. The building was demolished on May 5, 2011. The location is now the home of Huntington East Middle School.
Document 13: Joy (Marvin Gaye song): "Joy" is a 1983 single released by Marvin Gaye, the final single issued from his "Midnight Love" album. The song, which was built around a funk vibe, was inspired by Gaye's religious background, which had also inspired songs such as "God is Love", "Everybody Needs Love" and "Praise". Gaye introduced the song as a tribute to his father during his 1983 concert tour.
Document 14: Central West End, St. Louis: Playwright Tennessee Williams grew up in the neighborhood, and the house of the renowned poet T. S. Eliot is located in the Central West End. Beat writer William S. Burroughs's childhood home sits on Pershing Avenue (formerly Berlin Avenue) in the neighborhood. And though, often mistaken as the location of Sally Benson's home, the setting of the stories which were adapted into the movie "Meet Me in St. Louis," 5135 Kensington Avenue was actually located in the Academy neighborhood just across Delmar Boulevard to the north.
Document 15: Detroit: The city has numerous neighborhoods consisting of vacant properties resulting in low inhabited density in those areas, stretching city services and infrastructure. These neighborhoods are concentrated in the northeast and on the city's fringes. A 2009 parcel survey found about a quarter of residential lots in the city to be undeveloped or vacant, and about 10% of the city's housing to be unoccupied. The survey also reported that most (86%) of the city's homes are in good condition with a minority (9%) in fair condition needing only minor repairs.
ground_truth: Alberta Gay
sub_queries: 'Til Tomorrow >> performer Answer: Marvin Gaye
Who is the mother of Marvin Gaye ? Answer: Alberta Gay