Question:
Sir Pelham Grenville Wodehouse (; 15 October 1881 - 14 February 1975) was an English author and one of the most widely read humorists of the 20th century. Born in Guildford, the son of a British magistrate based in Hong Kong, Wodehouse spent happy teenage years at Dulwich College, to which he remained devoted all his life. After leaving school, he was employed by a bank but disliked the work and turned to writing in his spare time.
There had been films of Wodehouse stories since 1915, when A Gentleman of Leisure was based on his 1910 novel of the same name. Further screen adaptations of his books were made between then and 1927, but it was not until 1929 that Wodehouse went to Hollywood where Bolton was working as a highly paid writer for Metro-Goldwyn-Mayer (MGM). Ethel was taken with both the financial and social aspects of Hollywood life, and she negotiated a contract with MGM on her husband's behalf under which he would be paid $2,000 a week. This large salary was particularly welcome because the couple had lost considerable sums in the Wall Street Crash of 1929. The contract started in May 1930, but the studio found little for Wodehouse to do, and he had spare time to write a novel and nine short stories. He commented, "It's odd how soon one comes to look on every minute as wasted that is given to earning one's salary." Even when the studio found a project for him to work on, the interventions of committees and constant rewriting by numerous contract authors meant that his ideas were rarely used. In a 2005 study of Wodehouse in Hollywood, Brian Taves writes that Those Three French Girls (1930) was "as close to a success as Wodehouse was to have at MGM. His only other credits were minimal, and the other projects he worked on were not produced." Wodehouse's contract ended after a year and was not renewed. At MGM's request, he gave an interview to The Los Angeles Times. Wodehouse was described by Herbert Warren Wind as "politically naive [and] fundamentally unworldly," and he caused a sensation by saying publicly what he had already told his friends privately about Hollywood's inefficiency, arbitrary decision-making, and waste of expensive talent. The interview was reprinted in The New York Times, and there was much editorial comment about the state of the film industry. Many writers have considered that the interview precipitated a radical overhaul of the studio system, but Taves believes it to have been "a storm in a teacup", and Donaldson comments that, in the straitened post-crash era, the reforms would have been inevitable. Wind's view of Wodehouse's naivete is not universally held. Some biographers suggest that his unworldliness was only part of a complex character, and that in some respects he was highly astute. He was unsparing of the studio owners in his early-1930s short stories set in Hollywood, which contain what Taves considers Wodehouse's sharpest and most biting satire.
Answer this question using a quote from the text above:

what did he do for MGM

Answer:

input: Hill testified against his former associates to avoid a possible execution by his crew or going to prison for his crimes. His testimony led to 50 convictions. Jimmy Burke was given 20 years in prison for the 1978-79 Boston College point shaving scandal, involving fixing Boston College basketball games. Burke was also later sentenced to life in prison for the murder of scam artist Richard Eaton. Burke died of lung cancer while serving his life sentence, on April 13, 1996, at the age of 64. Paul Vario received four years for helping Henry Hill obtain a no-show job to get him paroled from prison. Vario was also later sentenced to ten years in prison for the extortion of air freight companies at JFK Airport. He died of respiratory failure on November 22, 1988, at age 73 while incarcerated in the FCI Federal Prison in Fort Worth. Hill, his wife Karen, and their two children (Gregg and Gina) entered the U.S. Marshals' Witness Protection Program in 1980, changed their names, and moved to undisclosed locations in Omaha, Nebraska; Independence, Kentucky; Redmond, Washington; and Seattle, Washington. In Seattle, Hill hosted backyard cookouts for his neighbors, and on one occasion, while under the influence of a combination of liquor and drugs, he revealed his true identity to his guests. To the ire of the federal marshals, they were forced to relocate him one final time to Sarasota, Florida. There, a few months had passed, and Hill repeated the same breach of security, causing the government to finally expel him from the Federal Witness Protection Program.

Answer this question "Did he testify?"
output: His testimony led to 50 convictions.

Answer the question at the end by quoting:

Celtic Frost () were a Swiss heavy metal band from Zurich. They are known for their strong influence on the development of extreme metal. Formed in 1982 as Hellhammer, the band became Celtic Frost in 1984 and was active until 1993. It re-formed in 2001 and disbanded following frontman Tom Gabriel Fischer's departure in 2008.
Celtic Frost's frontman, guitarist and singer Tom Gabriel Fischer, adopted the alias Tom Warrior. With Steve Warrior on bass, he formed one of the earliest extreme metal bands, Hellhammer, in 1981. Steve Warrior was later replaced by Martin Eric Ain - also a pseudonym. The band attracted a small international fan-base, got signed to Noise Records in Germany and recorded their debut EP Apocalyptic Raids in March 1984, now a rare find on eBay or second-hand record stores around the world. Metal publications were also skeptical of Hellhammer's musical endeavor. Metal Forces loathed the group; that started a long-lasting feud between that zine and Warrior, which kept Celtic Frost from playing in England for a couple of years. Rock Power was not fond of Hellhammer either - they considered it "the most terrible, abhorrent, and atrocious thing 'musicians' were ever allowed to record". In fact, they were "receiving miserable reviews everywhere", Warrior concluded. Regarding the controversial status of his former band, Thomas said: Way back in 1984 and 85, when Martin Eric Ain and I recorded Celtic Frost's first two albums Morbid Tales and To Mega Therion, Hellhammer lasted on us almost like a curse. Even though Hellhammer was the very reason we had thought over our goals and conceived the Frost, HH's left-overs kept being mighty rocks in our way. Many voices saw Frost as the same band with just a name-change. The lack of musical quality in HH made it almost impossible for us to get an unbiased reaction for Frost. To make a long story short, it almost killed all our work and dreams. By May 1984, Hellhammer had disbanded. Fischer and Ain, along with session drummer Stephen Priestly, regrouped as Celtic Frost. Their 1984 debut mini-LP, Morbid Tales was a hit in the underground metal scene, and the band set out on its first tour, through Germany and Austria. This was followed with an EP Emperor's Return. Both early releases are now available on the one CD.

What instrument did Steve Warrior play?
bass,