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

[EX Q]: Sentence: 'a closeup view of a bathroom sink, that is very modern'. Find frequency of the letter 'e'
[EX A]: 4

[EX Q]: Sentence: 'vanity sitting atop a base with two doors and a mirror overhead'. Find frequency of the letter 'n'
[EX A]: 3

[EX Q]: Sentence: 'twisted bars of metal connected to a tall building'. Find frequency of the letter 'n'
[EX A]:
3