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

[Q]: Sentence: 'a close up of a plate with a whole carrot'. Find frequency of the letter 'w'
[A]: 2


[Q]: Sentence: 'people plating cake in an office meeting room'. Find frequency of the letter 'g'
[A]: 2


[Q]: Sentence: 'a woman walking down the sidewalk pulling suitcases'. Find frequency of the letter 'l'
[A]:
4