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

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

[EX Q]: Sentence: 'a double parking meter is decorated with a picture of a girl with wings on her feet'. Find frequency of the letter 'r'
[EX A]: 6

[EX Q]: Sentence: 'a dog that is laying under a chair'. Find frequency of the letter 'i'
[EX A]:
3