Question: What character who is a former member of the Avengers was played by Pom Klementieff in Guardians of the Galaxy Vol. 2?
{'answer': 'Mantis', 'supporting_facts': [['Pom Klementieff', 0], ['Pom Klementieff', 2], ['Mantis (Marvel Comics)', 0], ['Mantis (Marvel Comics)', 1]]}