Question: When was the last episode of i love lucy?

Disambiguated questions and answers:
context: I Love Lucy is an American television sitcom that originally ran on CBS from October 15, 1951 to May 6, 1957, with a total of 180 half-hour episodes spanning six seasons (including the 'lost' original pilot and Christmas episode). The show starred Lucille Ball, her real-life husband Desi Arnaz, Vivian Vance, and William Frawley. It followed the life of Lucy Ricardo (Ball), a middle-class housewife in New York City, who either concocted plans with her best friends (Vance & Frawley) to appear alongside her bandleader husband Ricky Ricardo (Arnaz) in his nightclub, or tried numerous schemes to mingle with, or be a part of show business. After the series ended in 1957, a modified version continued for three more seasons with 13 one-hour specials; it ran from 1957 to 1960. It was first known as "The Lucille Ball-Desi Arnaz Show" and later in reruns as "The Lucy–Desi Comedy Hour".
question: When was the last episode of the original I Love Lucy?
short_answers: May 6, 1957
May 6 , 1957
wikipage: I Love Lucy
context: No context provided
question: When was the last episode of the modified version of I Love Lucy?
short_answers: April 1, 1960
context: I Love Lucy is an American television sitcom that originally ran on CBS from October 15, 1951 to May 6, 1957, with a total of 180 half-hour episodes spanning six seasons (including the 'lost' original pilot and Christmas episode). The show starred Lucille Ball, her real-life husband Desi Arnaz, Vivian Vance, and William Frawley. It followed the life of Lucy Ricardo (Ball), a middle-class housewife in New York City, who either concocted plans with her best friends (Vance & Frawley) to appear alongside her bandleader husband Ricky Ricardo (Arnaz) in his nightclub, or tried numerous schemes to mingle with, or be a part of show business. After the series ended in 1957, a modified version continued for three more seasons with 13 one-hour specials; it ran from 1957 to 1960. It was first known as "The Lucille Ball-Desi Arnaz Show" and later in reruns as "The Lucy–Desi Comedy Hour".
question: When was the last episode of the original I Love Lucy first aired?
short_answers: May 6, 1957
wikipage: I Love Lucy
context: No context provided
question: When was the last episode of the modified version of I Love Lucy first aired?
short_answers: April 1, 1960

Long-form answers:
knowledge: content: I Love Lucy became the most-watched show in the United States in four of its six seasons, and it was the first to end its run at the top of the Nielsen ratings.[3] As of 2011, episodes of the show have been syndicated in dozens of languages across the world[4][5] and remain popular with an American audience of 40 million each year.
wikipage: I Love Lucy
content: The Lucy–Desi Comedy Hour is a collection of thirteen black-and-white one-hour specials airing occasionally from 1957 to 1960 (as opposed to the thirty-minute regular series, I Love Lucy).
wikipage: The Lucy–Desi Comedy Hour
content: Original release: November 6, 1957 – April 1, 1960
wikipage: The Lucy–Desi Comedy Hour
long_answer: I Love Lucy was a popular American television sitcom starring Lucille Ball and her husband Desi Arnaz. It originally ran on CBS from October 15, 1951, to May 6, 1957. It still remains popular with American audiences today. A few months after its last show aired, the husband and wife, comedy duo created a spin-off show called, The Lucy–Desi Comedy Hour. The show is a collection of thirteen black-and-white one-hour specials airing occasionally from November 6, 1957, to April 1, 1960.  
long_answer: The CBS sitcom I Love Lucy had an original version and a modified version. The last episode of the original I Love Lucy first aired on May 6, 1957. After the series ended in 1957, a modified version called The Lucille Ball-Desi Arnaz Show, later called The Lucy–Desi Comedy Hour in reruns, continued for three more seasons with 13 one-hour specials. The modified version ran from 1957 to 1960, and its last episode first aired on April 1, 1960.