Background: Jonas Edward Salk (; October 28, 1914 - June 23, 1995) was an American medical researcher and virologist. He discovered and developed one of the first successful polio vaccines. Born in New York City, he attended New York University School of Medicine, later choosing to do medical research instead of becoming a practicing physician. In 1939, after earning his medical degree, Salk began an internship as a physician scientist at Mount Sinai Hospital.
Context: After City College, Salk enrolled in New York University to study medicine. According to Oshinsky, NYU based its modest reputation on famous alumni, such as Walter Reed, who helped conquer yellow fever. Tuition was "comparatively low, better still, it did not discriminate against Jews, ... while most of the surrounding medical schools--Cornell, Columbia, University of Pennsylvania, and Yale--had rigid quotas in place." Yale, for example, accepted 76 applicants, in 1935, out of a pool of 501. Although 200 of the applicants were Jewish, only five got in. During his years at New York University Medical School, Salk worked as a laboratory technician during the school year and as a camp counselor in the summer. During Salk's medical studies, he stood out from his peers, according to Bookchin, "not just because of his continued academic prowess--he was Alpha Omega Alpha, the Phi Beta Kappa Society of medical education--but because he had decided he did not want to practice medicine." Instead, he became absorbed in research, even taking a year off to study biochemistry. He later focused more of his studies on bacteriology which had replaced medicine as his primary interest. He said his desire was to help humankind in general rather than single patients. "It was the laboratory work, in particular, that gave new direction to his life." According to Salk: "My intention was to go to medical school, and then become a medical scientist. I did not intend to practice medicine, although in medical school, and in my internship, I did all the things that were necessary to qualify me in that regard. I had opportunities along the way to drop the idea of medicine and go into science. At one point at the end of my first year of medical school, I received an opportunity to spend a year in research and teaching in biochemistry, which I did. And at the end of that year, I was told that I could, if I wished, switch and get a Ph.D. in biochemistry, but my preference was to stay with medicine. And, I believe that this is all linked to my original ambition, or desire, which was to be of some help to humankind, so to speak, in a larger sense than just on a one-to-one basis." Concerning his last year of medical school Salk says: "I had an opportunity to spend time in elective periods in my last year in medical school, in a laboratory that was involved in studies on influenza. The influenza virus had just been discovered about a few years before that. And, I saw the opportunity at that time to test the question as to whether we could destroy the virus infectivity and still immunize. And so, by carefully designed experiments, we found it was possible to do so."
Question: Why did he decide to practice medicine?
Answer: my preference was to stay with medicine.

Problem: Background: Eddie Cantor (born Edward Israel Itzkowitz, January 31, 1892 - October 10, 1964) was an American "illustrated song" performer, comedian, dancer, singer, actor, and songwriter. Familiar to Broadway, radio, movie, and early television audiences, this "Apostle of Pep" was regarded almost as a family member by millions because his top-rated radio shows revealed intimate stories and amusing anecdotes about his wife Ida and five daughters. Some of his hits include "Makin' Whoopee", "Ida", "If You Knew Susie", "Ma!
Context: On May 25, 1944, pioneer television station WPTZ (now KYW-TV) in Philadelphia presented a special, all-star telecast which was also seen in New York over WNBT (now WNBC) and featured cut-ins from their Rockefeller Center studios. Cantor, one of the first major stars to agree to appear on television, was to sing "We're Havin' a Baby, My Baby and Me". Arriving shortly before airtime at the New York studios, Cantor was reportedly told to cut the song because the NBC New York censors considered some of the lyrics too risque. Cantor refused, claiming no time to prepare an alternative number. NBC relented, but the sound was cut and the picture blurred on certain lines in the song. This is considered the first instance of television censorship. In 1950, he became the first of several hosts alternating on the NBC television variety show The Colgate Comedy Hour, in which he would introduce musical acts, stage and film stars and play comic characters such as "Maxie the Taxi". In the spring of 1952, Cantor landed in an unlikely controversy when a young Sammy Davis, Jr., appeared as a guest performer. Cantor embraced Davis and mopped Davis's brow with his handkerchief after his performance. When worried sponsors led NBC to threaten cancellation of the show, Cantor's response was to book Davis for two more weeks. Cantor suffered a heart attack following a September 1952 Colgate broadcast, and thereafter, curtailed his appearances until his final program in 1954. In 1955, he appeared in a filmed series for syndication and a year later, appeared in two dramatic roles ("George Has A Birthday", on NBC's Matinee Theatre broadcast in color, and "Sizeman and Son" on CBS' Playhouse 90). He continued to appear as a guest on several shows, and was last seen on the NBC color broadcast of The Future Lies Ahead on January 22, 1960, which also featured Mort Sahl. Eddie Cantor was portrayed as a recurring character on HBO's series Boardwalk Empire, beginning with the introduction of the show in 2010, where he is played by Stephen DeRosa. Cantor's character appeared in three episodes of the show's first season, one episode of the second season, two of the third. and one of the fourth season.
Question: What roles did he appear in?
Answer:
("George Has A Birthday", on NBC's Matinee Theatre broadcast in color, and "Sizeman and Son" on CBS' Playhouse 90).