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

[EX Q]: Sentence: 'a woman standing next to a man on a motorcycle in front of a market'. Find frequency of the letter 'l'
[EX A]: 1

[EX Q]: Sentence: 'a group of three dogs laying on a kitchen floor'. Find frequency of the letter 'r'
[EX A]: 3

[EX Q]: Sentence: 'a punch of different shots of a man in the air'. Find frequency of the letter 'h'
[EX A]:
3