Question. Context: On June 15, 2016, Zac Efron began negotiations to star in the film, and in July 2016, Michelle Williams was cast. The film was choreographed by Ashley Wallen.

Question: who did the choreography for the movie the greatest showman?
Answer. Ashley Wallen
What step-by-step reasoning justifies that answer?
Reasoning: The relevant information to answer the above question is: The film was choreographed by Ashley Wallen.