Based on the clue 'ballerinas night watchmen are both alert when the...', what is the answer?

Based on the clue 'ballad that begins with the following isee the pyr...', what is the answer? What is associated with: ballerina alicia markova was director of this us opera companys ballet from 1963 1969? Based on the clue 'ballerina julie kent told vogue she wears lots of ...', what is the answer? Based on the clue 'ballerina olga koklova then jacquiline roque but ...', what is the answer? Based on the clue 'ballerinas maria tallchief tanaquil leclercq suzan...', what is the answer? Based on the clue 'ballerinas under age 11 shouldnt dance in these sh...', what is the answer? Based on the clue 'ballet music was thought an inferior genre when he...', what is the answer? What is associated with: ballet stars mikhail baryshnikov leslie browne were both up for oscars for this 1977 film?