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

[EX Q]: Sentence: 'a man walking a large elephant down a dirt road'. Find frequency of the letter 'g'
[EX A]: 2

[EX Q]: Sentence: 'the man is holding a plastic sled with snow in it next to a child'. Find frequency of the letter 'g'
[EX A]: 1

[EX Q]: Sentence: 'a tennis player with a racket and a ball'. Find frequency of the letter 'i'
[EX A]:
2