Conversation so far:
who played the mermaids in pirates of the caribbean
Àstrid Bergès-Frisbey and Gemma Ward play the mermaids in Pirates of the Caribbean: On Stranger Tides.
who directed the movie Pirates of the Caribbean: On Stranger Tides?
Rob Marshall directed Pirates of the Caribbean: On Stranger Tides.

Question: who produced the movie?
Self-contained rewrite: who produced the movie Pirates of the Caribbean: On Stranger Tides?