Conversation so far:
At what point did Vaslav Nijinsky become interested in ballet?
In 1900, Vaslav Nijinsky joined the Imperial Ballet School.
What influences did Vaslav Nijinsky have to get him interested in ballet?
Vaslav Nijinsky was introduced to dance by his parents, who were senior dancers with the travelling Setov opera company.
Are there any other interesting aspects about this Vaslav Nijinsky article?
Vaslav Nijinsky was born in 1889 or 1890 in Kiev, Russian Empire (now Ukraine),  to ethnic Polish parents, touring dancers Tomasz Niżyński and Eleonora Bereda.
Can you tell me more about Vaslav Nijinsky's parents?
Eleonora Bereda, along with her two brothers and two sisters, was orphaned while still a child.
What was Vaslav Nijinsky's childhood like?
At the end of the one year probationary period, his teachers agreed upon Vaslav Nijinsky's exceptional dancing ability and he was confirmed as a boarder at the school.

Question: Which dance company was he with?
Self-contained rewrite: Which dance company was Vaslav Nijinsky with?