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

[Q]: Sentence: 'a laptop computer with pictures of giraffes on the homescreen'. Find frequency of the letter 'o'
[A]: 5

[Q]: Sentence: 'a woman in a tank top reaches out for a frisbee'. Find frequency of the letter 'a'
[A]: 6

[Q]: Sentence: 'a man standing next to a laptop and bottles of beer'. Find frequency of the letter 'o'
[A]:
4