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

[EX Q]: Sentence: 'a variety of a different type of vegetables'. Find frequency of the letter 't'
[EX A]: 4

[EX Q]: Sentence: 'a cat sleeping near lots of pairs of shoes'. Find frequency of the letter 'r'
[EX A]: 2

[EX Q]: Sentence: 'the personal sized pizza is next to a glass of tea'. Find frequency of the letter 't'
[EX A]:
4