In 2016, 3 sets of triplets were born in Orange County hospitals. In 2017, 0 sets of triplets were born. In 2018, 6 sets of triplets were born. In 2019, 2 sets of triplets were born. In 2020, 4 sets of triplets were born. Assuming it's a Poisson distribution, what is the probability that Orange County will have 7 sets of triplets born in 2021?

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