claim: Caesar is an adaptation of a play by William Shakespeare.
evidence: Finola Moorhead -LRB- born 1947 -RRB- is an Australian novelist , playwright , essayist , poet , and reviewer .. Her topics include women and writing , switching between reality and fiction , with themes of subversion and survival .. Moorhead participates in the women 's liberation movement , and during the 1980s , she was a radical feminist .. As a result of a challenge she wrote a book without male characters .