In this task, you need to count the number of times the given letter appears in the given sentence.

[Q]: Sentence: 'a grey hummingbird by fence and tree branches'. Find frequency of the letter 'y'
[A]: 2


[Q]: Sentence: 'this marketplace has a lot of fresh fruit and vegetables'. Find frequency of the letter 'v'
[A]: 1


[Q]: Sentence: 'a man in blue shirt in kitchen peppering food next to a dog'. Find frequency of the letter 'i'
[A]:
5