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

[EX Q]: Sentence: 'three woman are having a discussion in the kitchen'. Find frequency of the letter 'n'
[EX A]: 5

[EX Q]: Sentence: 'a burning wood stove has a tea pot sitting on top of it and is full of wood'. Find frequency of the letter 'a'
[EX A]: 5

[EX Q]: Sentence: 'there are three animals that can be seen walking in a line'. Find frequency of the letter 'n'
[EX A]:
6