Question: How many stage musicals were written by the songwriting partnership who wrote Dearest Enemy?
Context: Flavia Arcaro (June 22, 1876 – April 8, 1937) was an American silent film actress.  She is known for her roles in "The Naggers on Four Wheels- No Brakes" (1932) and also in a play Dearest Enemy (1925). Dearest Enemy is a musical with a book by Herbert Fields, lyrics by Lorenz Hart, and music by Richard Rodgers.  This was the first of eight book musicals written by the songwriting team of Rodgers and Hart and writer Herbert Fields, and the first of more than two dozen Rodgers and Hart Broadway musicals.  The musical takes place in 1776, during the American Revolutionary War, when Mary Lindley Murray detained British troops long enough in Manhattan to give George Washington time to move his vulnerable troops. Dearest Enemy is a 1989 Australian sitcom about two newlyweds. The songwriting partnership of Mick Jagger and Keith Richards, known as Jagger/Richards (and occasionally Richards/Jagger), is a musical collaboration whose output has produced the majority of the catalogue of the Rolling Stones.  It is one of the most successful songwriting partnerships in history.  Jagger and Richards adopted the nickname "The Glimmer Twins" after a vacation cruise they took to Brazil in December 1968/January 1969 with their then-girlfriends, Marianne Faithfull and Anita Pallenberg.  An older English couple on the ship kept asking Richards and Jagger who they were.  When they refused to reveal their identities, the woman reportedly kept asking, "just give us a glimmer" (as in "give us a hint about who you are"), which amused Jagger and Richards.  In addition to Jagger and Richards's songwriting partnership, they have also produced or co-produced numerous Rolling Stones albums under the pseudonym The Glimmer Twins, after that experience together. John Cullum (born March 2, 1930) is an American actor and singer.  He has appeared in many stage musicals and dramas, including "On the Twentieth Century" (1978) and "Shenandoah" (1975), winning the Tony Awards for Best Leading Actor in a Musical for each.  He earned his first Tony nomination as lead actor in a musical in 1966 for "On a Clear Day You Can See Forever" in which he introduced the title song, and more recently received Tony nominations for "Urinetown The Musical" (2002) (best actor in a musical) and as best featured actor in a musical the revival of "110 in the Shade" (2007). Rodgers and Hart were an American songwriting partnership between composer Richard Rodgers (1902–1979) and the lyricist Lorenz Hart (1895–1943).  They worked together on 28 stage musicals and more than 500 songs from 1919 until Hart's death in 1943. My Dearest Enemy is an Israeli documentary that takes a behind-the-scenes look at Israel's secret diplomacy by sharing the highly anticipated meeting between Israeli Amnon Lipkin-Shahak and Palestinian Hani El Hassan—both powerful leaders in opposite camps. Kander and Ebb were a highly successful American songwriting team consisting of composer John Kander (born March 18, 1927) and lyricist Fred Ebb (April 8, 1928 – September 11, 2004).  Known primarily for their stage musicals, which include "Cabaret" and "Chicago", Kander and Ebb also scored several movies, including Martin Scorsese's "New York, New York".  Their most famous song is the theme song of that movie.  Recorded by many artists, "New York, New York" became a signature song for Frank Sinatra.  The team also became associated with two actresses, Liza Minnelli and Chita Rivera, for whom they wrote a considerable amount of material for the stage, concerts and television. Michael Cerveris (born November 6, 1960) is an American actor, singer, and guitarist.  He has performed in many stage musicals and plays, including several Stephen Sondheim musicals: "Assassins", "Sweeney Todd", "Road Show", and "Passion".  In 2004, Cerveris won the Tony Award as Best Featured Actor in a Musical for "Assassins" as John Wilkes Booth.  In 2015, he won his second Tony Award as Best Actor in a Musical for "Fun Home" as Bruce Bechdel. John Harold Kander (born March 18, 1927) is the American composer of a number of musicals as part of the songwriting team of Kander and Ebb.  His best-known stage musicals as composer are "Cabaret" and "Chicago", both of which were later adapted into films.
Answer: 28