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

[Q]: Sentence: 'a few men walking through a market place'. Find frequency of the letter 'f'
[A]: 1


[Q]: Sentence: 'there are two men sitting on a couch playing video games'. Find frequency of the letter 'v'
[A]: 1


[Q]: Sentence: 'two red motorcycles parked at a curb on the street'. Find frequency of the letter 'h'
[A]:
1