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

[EX Q]: Sentence: 'a black cat laying down on a bed'. Find frequency of the letter 'y'
[EX A]: 1

[EX Q]: Sentence: 'decorated baseball cake in a clear plastic box'. Find frequency of the letter 'k'
[EX A]: 1

[EX Q]: Sentence: 'two zebras standing around while a third zebra drinks from a pond'. Find frequency of the letter 's'
[EX A]:
3