Question: What was the original broadcaster of the NHL, on the network that first showed Your Witness?

full_context: Document 1: NHL on CBS: The NHL on CBS is the branding used for broadcasts of National Hockey League (NHL) games produced by CBS Sports, the sports division of the CBS television network in the United States, for three separate periods from 1957 to 1960, 1967 to 1972 and 1979 to 1980. With the original 1957 game telecasts, CBS became the first American television network to broadcast NHL games.
Document 2: Famous Jury Trials (radio program): Famous Jury Trials is a radio court show/dramatic anthology series in the United States. It began on January 5, 1936, and ended June 25, 1949. It is considered a program that initiated the popular court show genre, which would later begin broadcasting from television.
Document 3: They Stand Accused: They Stand Accused (also known as Cross Question) is an American dramatized court show broadcast on the now-defunct DuMont Television Network from September 11, 1949, to October 5, 1952 and again from September 9 to December 30, 1954.
Document 4: The Next Witness: "The Next Witness" is a Nero Wolfe mystery novella by Rex Stout, first published as "The Last Witness" in the May 1955 issue of "The American Magazine". It first appeared in book form in the short-story collection "Three Witnesses", published by the Viking Press in 1956.
Document 5: Color television: After a series of hearings beginning in September 1949, the FCC found the RCA and CTI systems fraught with technical problems, inaccurate color reproduction, and expensive equipment, and so formally approved the CBS system as the U.S. color broadcasting standard on October 11, 1950. An unsuccessful lawsuit by RCA delayed the first commercial network broadcast in color until June 25, 1951, when a musical variety special titled simply Premiere was shown over a network of five East Coast CBS affiliates. Viewing was again restricted: the program could not be seen on black - and - white sets, and Variety estimated that only thirty prototype color receivers were available in the New York area. Regular color broadcasts began that same week with the daytime series The World Is Yours and Modern Homemakers.
Document 6: Arena Football League: Beginning with the 2003 season, the AFL made a deal with NBC to televise league games, which was renewed for another two years in 2005. In conjunction with this, the league moved the beginning of the season from May to February (the week after the NFL's Super Bowl) and scheduled most of its games on Sunday instead of Friday or Saturday as it had in the past. In 2006, because of the XX Winter Olympic Games, the Stanley Cup playoffs and the Daytona 500, NBC scaled back from weekly coverage to scattered coverage during the regular season, but committed to a full playoff schedule ending with the 20th ArenaBowl. NBC and the Arena Football League officially severed ties on June 30, 2006, having failed to reach a new broadcast deal. Las Vegas owner Jim Ferraro stated during a radio interview that the reason why a deal failed is because ESPN refused to show highlights or even mention a product being broadcast on NBC.
Document 7: NHL on ABC: The NHL on ABC is the branding formerly used for broadcasts of National Hockey League (NHL) games televised on the American Broadcasting Company (ABC) in the United States. The network first broadcast NHL games during the 1992–93 season under a time-buy agreement with ESPN; ABC resumed regular season game telecasts on February 6, 2000, as part of a joint contract with ESPN that also gave ABC the rights to select games from each round of the Stanley Cup playoffs.
Document 8: The Hazel Scott Show: The Hazel Scott Show was an early American television program broadcast on the now defunct DuMont Television Network. The series, hosted by Hazel Scott, ran during the summer of 1950, and is most notable for being one of the first U.S. network television series to be hosted by any person of African descent.
Document 9: CBC Television: One of the most popular shows on CBC Television is the weekly Saturday night broadcast of NHL hockey games, Hockey Night in Canada. It has been televised by the network since 1952. During the NHL lockout and subsequent cancellation of the 2004-2005 hockey season, CBC instead aired various recent and classic movies, branded as Movie Night in Canada, on Saturday nights. Many cultural groups criticized this and suggested the CBC air games from minor hockey leagues; the CBC responded that most such broadcast rights were already held by other groups, but it did base each Movie Night broadcast from a different Canadian hockey venue. Other than hockey, CBC Sports properties include Toronto Raptors basketball, Toronto FC Soccer, and various other amateur and professional events.
Document 10: ESPN College Basketball on ABC: ESPN College Basketball on ABC (originally College Basketball on ABC) is the branding formerly used for broadcasts of NCAA Division I college basketball games produced by ESPN, and televised on the American Broadcasting Company (ABC). ABC broadcast select college basketball games during the 1960s and 1970s, before it began televising them on a regular basis on January 18, 1987 (involving a game between the LSU Tigers and Kentucky Wildcats). As CBS and NBC were also broadcasting college games at the time, this put the sport on all three major broadcast television networks. ABC's final regular college basketball broadcast aired on March 7, 2009 (between the Oklahoma State Cowboys and Oklahoma Sooners).
Document 11: ESPN College Football on ABC: ESPN College Football on ABC (branded for sponsorship purposes as ESPN College Football on ABC presented by Walmart or Kay Jewelers) is the branding used for broadcasts of National Collegiate Athletic Association (NCAA) Division I Football Bowl Subdivision (FBS) college football games that are produced by ESPN, and televised on the American Broadcasting Company (ABC) in the United States. ABC first began broadcasting regular season college football games in 1950 and has aired them on an annual basis since 1966. The network features games from The American, Atlantic Coast, Big Ten, Big 12, and Pac-12 conferences. In addition, ESPN also produces a separate prime time regular-season game package for ABC, under the umbrella brand "Saturday Night Football". (ESPN and ABC are both owned by The Walt Disney Company).
Document 12: The World in Your Home: The World in Your Home is an NBC Television TV series which aired from December 22, 1944 to 1948, originally broadcast on WNBT, NBC's New York flagship, then broadcast on NBC-affiliate stations WRGB in New York's Capital District and WPTZ in Philadelphia starting shortly after its premiere. The program consisted of educational short films.
Document 13: Eyewitness testimony: Psychologists have probed the reliability of eyewitness testimony since the beginning of the 20th century. One prominent pioneer was Hugo Münsterberg, whose controversial book On the Witness Stand (1908) demonstrated the fallibility of eyewitness accounts, but met with fierce criticism, particularly in legal circles. His ideas did, however, gain popularity with the public. Decades later, DNA testing would clear individuals convicted on the basis of errant eyewitness testimony. Studies by Scheck, Neufel, and Dwyer showed that many DNA - based exonerations involved eyewitness evidence.
Document 14: Your Witness (TV series): Your Witness is an American dramatized court show that aired on the ABC network from 1949 to 1950. It aired Mondays at 8:00 PM EST, and was based around real-life cases. It is among the very first television court programs.
Document 15: Arena Football League: On December 19, 2006, ESPN announced the purchase of a minority stake in the AFL. This deal included television rights for the ESPN family of networks. ESPN would televise a minimum of 17 regular season games, most on Monday nights, and nine playoff games, including ArenaBowl XXI on ABC. The deal resulted in added exposure on ESPN's SportsCenter. However, after the original AFL filed for bankruptcy, this arrangement did not carry over to the new AFL, which is a separate legal entity.
ground_truth: American Broadcasting Company
sub_queries: Your Witness >> original broadcaster Answer: ABC
NHL on ABC >> original broadcaster Answer: American Broadcasting Company