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

[EX Q]: Sentence: 'two zebras feed on a plant through some wire mesh'. Find frequency of the letter 'o'
[EX A]: 4

[EX Q]: Sentence: 'a girl sits on a surfboard and smiles'. Find frequency of the letter 'i'
[EX A]: 3

[EX Q]: Sentence: 'a bathroom that has it's lights turned on'. Find frequency of the letter 'h'
[EX A]:
4