Background: Stephen Ray Vaughan (October 3, 1954 - August 27, 1990) was an American musician, singer, songwriter, and record producer. In spite of a short-lived mainstream career spanning seven years, he was one of the most influential guitarists in the revival of blues in the 1980s. AllMusic describes him as "a rocking powerhouse of a guitarist who gave blues a burst of momentum in the '80s, with influence still felt long after his tragic death." Born and raised in Dallas, Texas, Vaughan began playing guitar at the age of seven, inspired by his older brother Jimmie.
Context: In September 1970, Vaughan made his first studio recordings with the band Cast of Thousands, which included future actor Stephen Tobolowsky. They recorded two songs, "Red, White and Blue" and "I Heard a Voice Last Night", for a compilation album, A New Hi, that featured various teenage bands from Dallas. In late January 1971, feeling confined by playing pop hits with Liberation, Vaughan formed his own band, Blackbird. After growing tired of the Dallas music scene, he dropped out of school and moved with the band to Austin, Texas, which had more liberal and tolerant audiences. There, Vaughan initially took residence at the Rolling Hills Country Club, a venue that would later become the Soap Creek Saloon. Blackbird played at several clubs in Austin and opened shows for bands such as Sugarloaf, Wishbone Ash, and Zephyr, but could not maintain a consistent lineup. In early December 1972, Vaughan left Blackbird and joined a rock band named Krackerjack; he performed with them for less than three months.  In March 1973, Vaughan joined Marc Benno's band, the Nightcrawlers, after meeting Benno at a jam session years before. The band featured vocalist Doyle Bramhall, who met Vaughan when he was twelve years old. The next month, the Nightcrawlers recorded an album at Sunset Sound Recorders in Hollywood for A&M Records. While the album was rejected by A&M, it included Vaughan's first songwriting efforts, "Dirty Pool" and "Crawlin'". Soon afterward, he and the Nightcrawlers traveled back to Austin without Benno. In mid-1973, they signed a contract with Bill Ham, manager for ZZ Top, and played various gigs across the South, though many of them were disastrous. Ham left the band stranded in Mississippi without any way to make it back home and demanded reimbursement from Vaughan for equipment expenses; Ham was never reimbursed.  In 1975, Vaughan joined a six-piece band called Paul Ray and the Cobras that included guitarist Denny Freeman and saxophonist Joe Sublett. For the next two-and-a-half years, he earned a living performing weekly at a popular venue in town, the Soap Creek Saloon, and ultimately the newly opened Antone's, widely known as Austin's "home of the blues". In late 1976, Vaughan recorded a single with them, "Other Days" as the A-side and "Texas Clover" as the B-side. Playing guitar on both tracks, the single was released on February 7, 1977. In March, readers of the Austin Sun voted them as Band of the Year. In addition to playing with the Cobras, Vaughan jammed with many of his influences at Antone's, including Buddy Guy, Hubert Sumlin, Jimmy Rogers, Lightnin' Hopkins, and Albert King.  Vaughan toured with the Cobras during much of 1977, but near the end of September, after they decided to strive for a mainstream musical direction, he left the band and formed Triple Threat Revue, which included singer Lou Ann Barton, bassist W. C. Clark, and drummer Fredde Pharaoh. In January 1978, they recorded four songs in Austin, including Vaughan's composition "I'm Cryin'". The thirty-minute audio recording marks the only known studio recording of the band.
Question: Did SRV tour with ZZ Top?
Answer: played various gigs across the South,

Background: Indigenous peoples of Mexico (Spanish: pueblos indigenas de Mexico), Native Mexicans (Spanish: nativos mexicanos), or Mexican Native Americans (Spanish: nativo america mexicanos), are those who are part of communities that trace their roots back to populations and communities that existed in what is now Mexico prior to the arrival of Europeans. According to the National Commission for the Development of Indigenous Peoples (Comision Nacional para el Desarrollo de los Pueblos Indigenas, or CDI in Spanish) and the INEGI (official census institute), in 2015, 25,694,928 people in Mexico self-identify as being indigenous of many different ethnic groups, which constitute 21.5% of Mexico's population.
Context: The Law of Linguistic Rights of the Indigenous Languages recognizes 62 indigenous languages as "national languages" which have the same validity as Spanish in all territories where they are spoken. According to the National Institute of Statistics, Geography and Data Processing (INEGI), approximately 6.7% of the population speaks an indigenous language. That is, less than half of those identified as indigenous. 6,695,228 people 5 years or older were tallied as indigenous-language speakers in the 2010 census, an increase of about 650,000 from the 2000 census. In 2000, 6,044,547 people 5 years or older spoke an indigenous language.  In previous censuses, information on the indigenous speaking population five years of age and older was obtained from the Mexican people. However, in the 2010 census, this approach was changed and the Government also began to collect data on people 3 years and older because from the age of 3, children are able to communicate verbally. With this new approach, it was determined that there were 6,913,362 people 3 years of age or more who spoke an indigenous language (218,000 children 3 and 4 four years of age fell into this category), accounting for 6.6% of the total population. The population of children aged 0 to 2 years in homes where the head of household or a spouse spoke an indigenous language was 678 954. The indigenous language speaking population has been increasing in absolute numbers for decades, but have nonetheless been falling in proportion to the national population.  The recognition of indigenous languages and the protection of indigenous cultures is granted not only to the ethnic groups indigenous to modern-day Mexican territory, but also to other North American indigenous groups that migrated to Mexico from the United States in the nineteenth century and those who immigrated from Guatemala in the 1980s.
Question: What more does the article say about Spanish and other indigenous languages ?
Answer:
However, in the 2010 census, this approach was changed and the Government also began to collect data on people 3 years and older