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

[EX Q]: Sentence: 'a person with some scissors over a bowl'. Find frequency of the letter 's'
[EX A]: 6

[EX Q]: Sentence: 'a group of people standing on grass with a train in the background'. Find frequency of the letter 'n'
[EX A]: 6

[EX Q]: Sentence: 'that looks like it could be a very delicious meal'. Find frequency of the letter 'c'
[EX A]:
2