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

[EX Q]: Sentence: 'town clocks affixed to a tall, brick building'. Find frequency of the letter 'r'
[EX A]: 1

[EX Q]: Sentence: 'a man sitting inside a green military truck talking to someone'. Find frequency of the letter 'i'
[EX A]: 7

[EX Q]: Sentence: 'group of elephants feeding in between a row of trees in the jungle'. Find frequency of the letter 'o'
[EX A]:
4