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

[EX Q]: Sentence: 'a line of people on motorcycles on the road'. Find frequency of the letter 'e'
[EX A]: 5

[EX Q]: Sentence: 'an old woman is holding her cat in front of a camera'. Find frequency of the letter 'r'
[EX A]: 3

[EX Q]: Sentence: 'a person in a wet suit carrying a surfboard out to the ocean'. Find frequency of the letter 'e'
[EX A]:
4