A.   The Alvin Ailey American Dance Theater, located on West 55th Street and 9th Avenue in New York City, traces its roots to a choreographer who interwove modern dance, jazz, and African rhythms in creations such as Revelations. A spectacular work that audiences have enjoyed for more than fifty years.

B.   The Alvin Ailey American Dance Theater, located on West 55th Street and 9th Avenue in New York City, traces its roots to a choreographer who interwove modern dance, jazz, and African rhythms in creations such as Revelations, a spectacular work that audiences have enjoyed for more than fifty years.

A.   The Joffrey Ballet, located in Chicago. The company makes political statements as well as artistic ones. Gerald Arpino (1923-2008) was its principal choreographer for most of its history.

B.   The Joffrey Ballet, located in Chicago, makes political statements as well as artistic ones under the direction of Gerald Arpino (1923-2008), its principal choreographer.

A.   George Balanchine (1904-1983) was the founding artistic director of the New York City Ballet. Where he created stellar works such as Agon and Jewels.

B.   George Balanchine (1904-1983) was the founding artistic director of the New York City Ballet, where he created stellar works such as Agon and Jewels.

A.   The choreographer Merce Cunningham (1919-2009) always focused on the abstract and the avant-garde in music and dance. He also gained fame for putting movements together according to chance rather than design.

B.   The choreographer Merce Cunningham (1919-2009) always focused on the abstract and the avant-garde in music and dance. Because he put movements together according to chance rather than design.

A.   Agnes de Mille (1909-1993) choreographed not only ballets based on American folklore but also dances for Broadway musicals. Among the latter, Oklahoma! stands out.

B.   Agnes de Mille (1909-1993) choreographed not only ballets based on American folklore but also dances for Broadway musicals. Among the latter, Oklahoma!

A.   Katherine Dunham, who died in 2006, brought Caribbean and African dance to the United States; in fact, she founded the first African American dance company here. Her notable work on Broadway includes Cabin in the Sky.

B.   Katherine Dunham, who died in 2006, brought Caribbean and African dance to the United States; in fact, she founded the first African American dance company here. And her notable work on Broadway: Cabin in the Sky.

A.   Eliot Feld (born 1942) joined the American Ballet Theater when he was twenty, choreographing. For that prestigious company. In 1974 he organized the Feld Ballet.

B.   Eliot Feld (born 1942) joined the American Ballet Theater when he was twenty, choreographing for that prestigious company. In 1974 he organized the Feld Ballet.

A.   The modern-dance choreographer Martha Graham (1894-1991) founded a school and company of her own in the 1920s. Known for a demanding alternative to classical ballet, Appalachian Spring, one of her most famous works.

B.   Known for a demanding alternative to classical ballet, the modern-dance choreographer Martha Graham (1894-1991) founded a school and company of her own in the 1920s. Appalachian Spring is one of her most famous works.

A.   Judith Jamison (born 1944), a celebrated dancer with the Alvin Ailey American Dance Theater. She took over as artistic director in 1989.

B.   Judith Jamison (born 1944) was a celebrated dancer with the Alvin Ailey American Dance Theater when she took over as artistic director in 1989.

A.   Bill T. Jones (born 1952) performs only in works that he has choreographed, alone or in collaboration with someone else. His works refer to current social issues such as AIDS.

B.   Bill T. Jones (born 1952) performs only in works that he has choreographed. Alone or in collaboration with someone else. That his works refer to current social issues such as AIDS.