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

[Q]: Sentence: 'some food on plates next to each other on a table'. Find frequency of the letter 'e'
[A]: 6


[Q]: Sentence: 'two elephants walking on cement next to wall'. Find frequency of the letter 'n'
[A]: 5


[Q]: Sentence: 'a single elephant walking in a field with many bushes'. Find frequency of the letter 'n'
[A]:
5