Conversation so far:
how did Vaslav Nijinsdky's career start?
Vaslav Nijinsky danced in the Mariinsky production of Mozart's Don Giovanni, in a ballet sequence choreographed by Michel Fokine.

Question: what did he do after that?
Self-contained rewrite: what did Vaslav Nijinsky  do after he danced in the Mariinsky production of Mozart's Don Giovanni, in a ballet sequence choreographed by Michel Fokine.t?