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

[EX Q]: Sentence: 'young boy flying kite in large field at outdoor event'. Find frequency of the letter 'y'
[EX A]: 3

[EX Q]: Sentence: 'a green bus driving in a street filled with heavy traffic'. Find frequency of the letter 'v'
[EX A]: 2

[EX Q]: Sentence: 'man and woman sitting on bench contemplating a statue'. Find frequency of the letter 'u'
[EX A]:
1